On-&zwsp;site services IC - Seidl Technologies
1. Summary for readers in a hurry
2. Principles of our on-site services
3. Internet connectivity today
4. Infrastructure, parties, proprietors
5. Services, business relationships
6. Problems with Subscriber's Lead-Ins
7. DSL statistics
8. FTTH
9. Cable routing
10. Packet routing
11. Wi-Fi
12. Telephony
13. Image gallery
14. The end
1. Summary for readers in a hurry
In a certain area around Bleicherode, Seidl Technologies offers on-site services tailored to the needs of end consumers who have problems with their access to the Internet, their home network in general, or their telephony equipment. We assist our customers in fault finding and remedy, and support them in planning, installing, commissioning, extending, and optimizing their communications infrastructure. We also offer the aforementioned services to corporates and public institutions, as long as their installations match our profile.
Charges levied by us consist of labor costs, material costs, and costs to cover travel expenses. Besides, our pricing plan 2 of February the 5th, 2022, applies. Labor costs are calculated by taking the summed time every single employee or assistant spent at the customer's premises, multiplied by a fixed rate of €40 per hour and person. The latter amount contains approximately €6.39 of Value Added Tax (VAT) per hour and person. The use of material is subject to agreements, and the same applies to its prices. Costs to cover travel expenses are determined here by taking the total number of driven kilometers to and from the customer's premises, multiplied by the fixed rate of €0.50 per kilometer. That value includes nearly €0.08 of VAT per kilometer. Customers in Bleicherode are not charged for the distance traveled. Providing on-site services, the travel expenses can represent a significant part of the total costs. The following map allows one to gain a rough overview of the travel costs that are due. The red point in the center indicates the position of Bleicherode.
If you are interested in our on-site services, please endeavor to get a Customer ID in conjunction with an initial Customer password. You can obtain both by telephone or email. The telephone number can be found in the Web imprint. Please note the specified office hours for telephone calls. Alternatively, if you decide to request the access data by email, please send an email to cdfrfac@seidl-tech.com, where the phrase Request for access credentials to the customer data form of Seidl Technologies must be included either as the subject line or within the message body. The individual access data will then be sent back within the next seven working days to the address from which the request was sent. If you make an error when drafting the request, your email will be rejected by our system with the notice Neither the subject nor the body contain the agreed text, informing you that your initial request has failed so that you can correct the issue accordingly. With the access data obtained in this way, please fill out the Customer data form. This should be done with some care. And you amiably imagine one more time what your problems are. We, on the other hand, can reasonably prepare ourselves for our on-site mission. Our undertaking strives to act according to the needs, what at this point above all means to avoid unnecessary costs. In exceptional cases, we will also fill out the customer data form together on the telephone. We later get in touch with you to make the necessary agreements concerning the commencement of works.
Please take note of our Terms and Conditions for this service type, given under T&C On-site services IC, as well as the information given under Legal notices.
Please amass such things as the contract with your telecommunications service provider, any access data, as well as the usernames and passwords of all your devices, and keep them handy.
Customers with high demands are offered to perform all the preparations in a conversation on their premises. But in this way, it is possible that several arrivals and departures cannot be avoided.
If you in the first place wish to remain anonymous, you have the possibility to fill out the customer data form using a test account. In this case nothing is stored.
2. Principles of our on-site services
When developing solutions for our customers, we take concepts from professional environments and realize them on selected consumer-level hardware. Our main focus is to create long-lasting installations that combine features such as extensive independence from providers and access technologies as well as robustness and reliability with low costs. We do not follow all the trends and advise against things that question the security of your installation. Efforts are being made to protect existing investments. This also includes that we look for defects and rehabilitate as long as the latter is reasonable. Finally, we also welcome customers who want the great solution and want to realize cost-intensive subtasks by themselves.
3. Internet connectivity today
With regard to the IT infrastructure available in private households today, driven by the requirements that now even the web shops of some vendors require, a fast and inexpensive Internet access plays a central role. This is also not diminished by the fact that almost everyone also accesses content on the Internet with the help of a smartphone. The fast and inexpensive Internet access comes to the end consumer in the form of a copper telephone cable, a copper coaxial cable, or a fiber optic cable, less frequently via mobile network, satellite, long-range Wi-Fi or similar technologies. In contrast, devices within the home environment today hardly communicate via wired connections anymore. They communicate primarily via radio, more specifically via Wi-Fi, via short-range Bluetooth, but also via proprietary solutions. Complete Wi-Fi coverage is increasingly demanded in living areas. To this end, smart devices also recognize the Wi-Fi networks known to them and can preferentially access them in order to conserve any data volume quotas on the mobile network side.
4. Telecommunications infrastructure, involved parties, ownership relations
Before the liberalization of the telecommunications market, the situation was very clear. There were the customers and the only provider of telecommunications solutions, a private or public monopolist. This provider was at the same time the owner of the entire telecommunications infrastructure while customers rented the terminal devices. Connecting private terminal equipment to the provider's infrastructure required a permit, which to the normal customer was almost never granted. The market already knew at those times how to react to the comprehensible requirement of the owner, not to connect unauthorized equipment to its infrastructure, even though only with such terrible things as acoustic couplers for data transmission. Despite all this, the advantage of such a situation was the very simple business relationship with its clearly defined responsibility, the disadvantage was the absence of any competition.
Meanwhile, we are a few steps further. We have not only telephones, but also the Internet, fixed and mobile, by day and night, and often without any limitation as to the volume of data to be transported. To this end, the still ongoing liberalization of the telecommunications market has already brought several benefits. In the first place, millions of customers enjoy low prices. In Germany today no one has to get along without a reasonable Internet access, although not all access technologies are available everywhere. However, despite all the euphoria, what has remained with us in some places are the old lines. Thus, there are also customers who suffer. On the one hand, these are the ones who fail to get an ordered connection working at all. The ones who belong to the latter can focus on the following remarks, to develop a certain understanding for the causes of some problems. This understanding will surely help that a suitable solution is found at last. The presentation of the relationships is simplified and is limited to the circumstances surrounding the copper telephone cable. Despite their diverseness in detail, things are not fundamentally different in the cable television or FTTH business. On the other hand, if you are among those whose connection is generally up and running and who are less interested in what follows, you can skip quite a bit and continue reading at DSL Statistics or FTTH.
Wired Internet connections require that the cable is working. The question arises as to who is responsible for the operativeness of this cable. The one who is responsible first is the owner of the cable. However, today we have no longer just a single owner as before the deregulation of the telecommunications market. Today, our cable is divided into at least three sections owned by at least two different parties. Who are these owners now and at which point of the cable do they change? The owner of the farthest cable section, seen from the customer's point of view, is the incumbent local exchange carrier. The incumbent local exchange carrier is typically the successor of the former private or public monopolist mentioned above, or is the successor of a partition of the latter. The incumbent local exchange carrier is the owner of the telecommunications infrastructure up to the building of the customer and maintains it. So, if you dig a hole in your garden and thereby damage the telecommunications infrastructure, you will run into serious trouble with the incumbent local exchange carrier. The ownership and consequently the responsibility of the incumbent local exchange carrier typically ends at a Demarcation Point known as the Distribution Point, which is typically located in the cellar or in an outdoor area of the building. The Distribution Point itself remains the property of the incumbent local exchange carrier in any case and may only be opened by authorized personnel. This is clearly illustrated in the accompanying picture. The thick black cable with the imprinted telephone icons, which leads here six twin wires, as well as the gray box belong to the incumbent local exchange carrier. The thin gray cable with two twin wires belongs to the next cable section. Today, the latter cable would be designed as Category 5e or better. In the FTTH environment, this Demarcation Point is called the Building Entry Point or BEP, just as in the classic cable network. An FTTH BEP like the one shown for a single-family home contains virtually no metal parts and is not grounded either. At the bottom right, the 7 mm microduct enters, into which the 2.5 mm four-fiber optic cable of the incumbent local exchange carrier is later blown to be connected by splicing to the fibers of the green block. The openings at the bottom left and middle left are blank-plugged here. At the top left, a single-fiber cable exits, which belongs to the next cable section. It leads either to an Optical Termination Outlet (OTO) or directly to the modem's media converter. Here it goes directly to the modem's media converter.
Toward the customer, it follows a second cable section. For the moment this section is here referred to as in-house telephone network. There is now a consensus that the in-house telephone network has to be considered as a part of the building cabling. However, there is controversy over who owns this in-house telephone network and who can be held responsible for its correct functioning. Nonetheless this question is very easy to answer. The in-house telephone network belongs to the one who commissioned its installation and paid for the latter, or a respective legal successor. Normally, only two candidates come into question here. Thus, the in-house telephone network belongs to the property of the incumbent local exchange carrier or the owner of the building. This means that either the incumbent local exchange carrier or the owner of the building can be held responsible for the correct functioning of this section. But to immediately anticipate the appropriate question, correct functioning of the in-house telephone network first of all means that analog telephony works, no more, but also not less. From a technical point of view, the classic in-house telephone network consists of one or more twin wires called Subscriber's Lead-In. Each of these lines, called Subscriber's Lead-In, connects the aforementioned Demarcation Point, the Distribution Point, to a second Demarcation Point in the premises of the customer, called Master Socket. In Germany, this Master Socket contains the so-called Passive Test Termination, which can be used to assess the state of the telephone line from the exchange. Since this test termination is now no longer mandatorily localized at the property boundary of the incumbent local exchange carrier, but only at the end of the Subscriber's Lead-In, the incumbent local exchange carrier need get along well with the owner of the Subscriber's Lead-In. The latter is, of course, assured from the outset if the incumbent local exchange carrier is also the owner of the Subscriber's Lead-In. On the other hand, the interests suggest that the incumbent local exchange carrier and the owner of the Subscriber's Lead-In generally get along well with each other also in the other case, and that though there seems to be little regulation compared to electricity, gas, and water. It can first of all be stated that, today as in the past, the incumbent local exchange carrier and the owner of the building do in principle not have to maintain a business relation with one another. A common interest, however, will very likely be to provide the telecommunications customer with adequate services. Furthermore, homeowners who do not want to spend too much money are extremely satisfied with the situation, in which the incumbent local exchange carrier claims the Subscriber's Lead-Ins that still originate from the age of the private or public monopoly, and do certainly also not want to get anything to do with these things in the future. And finally, owners of a building who reconstructed their property, including the building cabling, did that most likely in such a manner that the Subscriber's Lead-Ins meet current standards and will not pose any problem in the next future. Thus, the incumbent local exchange carrier got the part of the telephone line that was most unpleasant from its point of view upgraded without having spent one euro, and at the same time got rid of the responsibility for this part. The search for a fault in a Subscriber's Lead-In in a large apartment building can be quite intricate. Also the laying of a new Subscriber's Lead-In can entail considerable costs, particularly in large buildings or when aesthetic aspects play a role. On the other hand, in a single-family home it might be useful to have the Subscriber's Lead-In consist of only half a meter of telephone cable, that is, to have the Master Socket installed in the cellar right next to the Distribution Point. In the FTTH environment, the second cable section is referred to as the In-House Fiber Optic Cable or Network Level 4 fiber optic cable. The second Demarcation Point on the customer premises is the Optical Termination Outlet (OTO). Our image shows that an OTO is nowadays also sold together with the pre-spliced In-House Fiber Optic Cable, which can be particularly advantageous for single-family homes. The connector at the bottom right is plugged into the FTTH BEP, while the modem — whether designed as a separate device or integrated into a router — connects to the socket with the metallic clamping spring shown in the image. Ownership structures and responsibilities for FTTH are similar to those of the traditional in-house telephone network, and consequently so are any potential issues that may arise.
In Germany, the telephone mainline is not a performance owed in the context of the tenancy
law, unless otherwise defined by the contract of tenancy or the standard of the rental apartment.
Interestingly, however, the possibility of gaining access to a landline, more precisely, the existence
of a Distribution Point or Building Entry Point which is assigned to the tenement house, seems to be
one of the minimum requirements for rented dwellings, which the tenant may regularly rely upon and
trust in. So, in Mietrecht 08 - 2015 Mietrechtslexikon , retrieved on December the 19th, 2016, it can be read.
The tenant's right to freedom of information is constitutionally protected (…). The handover point in the house (meaning the Demarcation Point that is called Distribution Point
or Building Entry Point) is established by the telephone company
(meaning by the incumbent local exchange carrier), and the landlord/owner must tolerate the installation and collaborate for
it. If there are no cables routed from the handover point to the
apartment (meaning there is no Subscriber's Lead-In or
In-House Fiber Optic Cable), the
tenant has a legal claim to install the lines necessary for the telephone connection (that is
exactly one line being the Subscriber's Lead-In or the In-House Fiber Optic Cable), as well as
other technical facilities (meaning the Master Socket or the Optical Termination Outlet), at least himself. These are facilities which
the tenant can remove after the end of the tenancy and, at the request of the landlord, also must
remove. As long as the cable routing requires only a minimal
intervention in the structure of the building, the landlord's consent is superfluous. The landlord can also not refuse to grant his consent. This applies even if the contract of tenancy has been agreed otherwise.
(…). Thus,
it should be noted that in Germany, in an extreme case, a Subscriber's Lead-In or an In-House Fiber Optic Cable can be owned
by a tenant, too. In the meantime, legislators have dutifully enacted new rules forcing property owners
to tolerate In-House Fiber Optic Cables. However, these mandates
still bypass the question of who actually pays for clean, property-preserving craftsmanship instead of the cheapest minimal solutions. Consequently,
practically nothing has changed for the better. The resulting trench warfare between tenants, property
owners, and the legislature simply enters the next round.
The third and final cable section toward the customer begins at the Master Socket or the Optical Termination Outlet. This final cable section can be designed in quite varied ways. Since August the 1st, 2016, there is no longer any legal way in Germany to directly or indirectly force telecommunications terminal equipment (customer premises equipment) upon a consumer, meaning the customer can largely decide for themselves what this final cable section — meaning the customer-side cable section — looks like. At the same time, this naturally places the customer in full responsibility regarding its functionality. Young people moving into an apartment will set up a fancy home center as a router and hope to get by without any additional cables. The opposite is a single-family home with multiple independent cablings, each in a star topology. Perhaps initially there are two cabling runs, pulled with Cat x and coaxial cable. All cables lie in empty conduits with large bending radii, so nothing stands in the way if the time comes one day to replace one or the other cable with fiber optics. Or you have a single-family home with an old telephone network where actually no one knows anymore exactly where the lines run. The only thing that is clear is that all phones and secondary ringers are wired in parallel and represent an alternating ringing current equivalent load of about 4. On the other hand, you might have 5 overlapping fiber optic networks in a combined star-bus topology there, as well as a Cat 7 bus for home automation. Such an installation is a great source of joy because practically any new requirement can be met with ease and elegance while maintaining high security. Furthermore, even the youngest members of the family are usually thrilled when they notice how a home Wi-Fi network built from several cleverly arranged access points performs compared to an anemic installation elsewhere.
5. Telecommunications service for end consumers, business relationships
This brings the telecommunications service provider, also known as the service provider, into play. In terms of terminology, this section focuses exclusively on the environment of the copper telephone cable, fully aware that the challenges in the FTTH environment are practically identical. Thus, the telecommunications service provider generally maintains two business relationships that are of interest to the telecommunications end customer. It first of all sells telecommunications services to this customer and presents invoices to him. The telecommunications service provider is thereby the only contractual partner the customer maintains a business relationship with. An interesting aspect of this business relationship is that, in Germany, the telecommunications service provider owes the provision of its service at the Master Socket. This means that German courts are meanwhile extinguishing all clauses and formulations that are found in the general terms and conditions of telecommunications service providers for the purpose of attaching the provision of their service to any other point before the Master Socket. The second business relationship of the telecommunications service provider, which is interesting for the telecommunications customer, is the one with the incumbent local exchange carrier. Namely, if the telecommunications service provider and the incumbent local exchange carrier are not one and the same company, then in many countries the incumbent local exchange carrier is required by laws and regulations to lease a certain portion of its infrastructure to the telecommunications service provider — though no longer unconditionally, as the discussions surrounding VDSL2-Vectoring in Germany demonstrated. The duration of this renting corresponds to the duration of the contract between the telecommunications customer and the telecommunications service provider. The incumbent local exchange carrier, however, retains control over its property and also maintains it appropriately. And now comes the problem. The part of the infrastructure that the incumbent local exchange carrier has to rent to the telecommunications service provider in Germany, that is the part whose operativeness needs to be provided, too, this part ends at the Distribution Point. This in turn means. Apart from one possible exception, a telecommunications service provider neither owns the Subscriber's Lead-In nor has a contract that ensures the operativeness of this line section toward the customer. With that, the telecommunications service provider hangs by quite a thin thread. A service needs to be delivered at the Master Socket without having the complete line up to there under contract. Certainly, during the contract period, no one else than the telecommunications service provider is interested in the Subscriber's Lead-In, but also no one else cares if it does not work. But, the telecommunications service provider could also not simply send a technician, since this technician has from the outset no right to set his hand to the building cabling, that is to say to other people's property. The only possible problem-solving procedure would therefore be to find the actual owner of the Subscriber's Lead-In and negotiate with him how to proceed further. In this way, such an operation begins to become expensive. Whatever is left is the hope that the Subscriber's Lead-In is in order. And the latter is in fact generally the case.
6. Problems with the Subscriber's Lead-In, what different parties do
Under this heading as well, we restrict our terminology to the environment of the copper telephone cable. And here, too, we remind you once again that these statements apply analogously to the FTTH environment. The provision of telecommunications services for end consumers is a mass business, which usually runs unobstructed. In the following, it is now asked what may happen in the case that a Subscriber's Lead-In is actually defective. Finding the answer to such a question is not easy. Nevertheless, we will attempt to find one here. Among all possible telecommunications service providers a customer can have a contract with, there is first of all a distinguished one, namely, the one which at the same time appears as the incumbent local exchange carrier. If this particular telecommunications service provider also still owns the Subscriber's Lead-In, then the Subscriber's Lead-In is repaired, certainly economically, but everything will work thereafter. The customer will not be charged. So the thing goes in the direction one imagines. In the following, we assume that the telecommunications service provider does not own the Subscriber's Lead-In, but is, on the other hand, willing to provide the owed services. Then the telecommunications service provider will seek out the owner of the Subscriber's Lead-In to agree with him how it is to be repaired. The owner cannot refuse to repair the Subscriber's Lead-In. The telecommunications service provider can now require the owner to repair the Subscriber's Lead-In at his own expense. In this case, however, the telecommunications service provider cannot expect more than the Subscriber's Lead-In is made suitable for analog telephony. The telecommunications service provider would however typically like to sell DSL and has thus immediately again the problem that the Subscriber's Lead-In is, after the repair, of course suitable for analog telephony, but perhaps not for DSL. So the telecommunications service provider can only hope again. The second chance is that the telecommunications service provider pays for the repair itself. Only in this case the telecommunications service provider can really be sure that the Subscriber's Lead-In will fulfill its purpose. Again, the customer will not be charged. A less responsible telecommunications service provider solves the problem differently. Such a provider considers itself first as a victim of adverse circumstances. After determining a failure in the Subscriber's Lead-In, such a provider will simply terminate the contract with the end customer. Such a practice does not help the customer any further, but is not considered unfair. On the other hand, it is unfair to stall the customer and let things slide at the same time. And then there is the clever telecommunications service provider. This maintains an availability database, from which all buildings with faulty Subscriber's Lead-Ins are removed over time. Hence in the future, to customers who live in such buildings will not be sent any further offers, so there will be no more trouble with them.
One may ask oneself why in Germany certain things are more difficult than in other countries. Well, Germany is a nice country. Comparatively many cables are laid underground or concealed in the walls. That is why all activities on the cable infrastructure are much more painful than in other countries, where perhaps everything is fastened to the outside of the building wall at a height of about three meters. And, to quickly route a Subscriber's Lead-In outside along the façade once, this is not at all possible in Germany. In addition, more than half of all Germans live in rented accommodations, and tenants usually have nothing to do with the infrastructure nor have anything to approve. In rental apartments of the upper price class, it is very likely that everything is in order. If, therefore, there are conflicts of interest that escalate necessary changes in the cables to a crucial test, then those are likely to be observed in the lower rental price segment.
Wire-bound Internet connections, this may include copper coaxial and fiber optic cable connections, are a fine thing, and only if there is no way to get them, radio-based access technologies should be envisaged. But the way to get them can yet be stony. What is now to be advised, if a commissioned connection does not get running? One possible course of action looks as follows. If a telecommunications service provider fails to establish a functioning Internet connection within a reasonable period of time, it should not be waited too long to replace this provider by another. If the current telecommunications service provider acts reasonably, it will immediately accept the cancellation of the contract because it does not provide the service it owes. It does not interest anyone to know whether or not it is its fault. If, on the other hand, the current telecommunications service provider behaves unflexibly, the matter should be handed over without hesitation to a law firm. This saves a lot of time and money in the end. Once freed, the next telecommunications service provider can be tried as a new customer, benefiting all bonuses associated with that. Nevertheless, one might not get off quite as favorably as with the one just discharged. But the goal must be kept in mind. It is therefore recommended to consider whether or not that telecommunications service provider should be chosen that appears at the same time as the incumbent local exchange carrier. Especially since there seem to actually be any problems, it is further recommended to buy the installation service, which is often offered at a fixed price. This purchase gives the order a special status, with which it clearly stands out from the crowd. For those, who live in their own house, the course of action looks much easier. The Subscriber's Lead-In is repaired at the expense of the houseowner and that is it. Should you, as a telecommunications end customer who has possibly been left alone, are eventually convinced that it might be better to consult with us about the next step, just contact us. We have measuring instruments available to search for faults in Subscriber's Lead-Ins in a straightforward manner.
7. DSL statistics
If a DSL connection is running once, a great step has been made. This allows one to inspect the status of a connection from the modem's point of view. The displayed data rates should meet the expectations. They should change slightly when the modem is turned off and then back on again. The existence of minor data rate changes suggests that the hardware, belonging to the telephone exchange, is not too old. If, however, the data rate changes considerably when the modem is switched off and on again, that is, the data rate negotiation procedure does not provide a reproducible result, then the line must be assumed to have some problem. The latter is usually accompanied by fairly high values for the frame and bit error rates. You can ask us to determine in whose area of responsibility such line problems fall and, if you are held responsible for these problems, also to remedy them.
8. FTTH
FTTH (Fiber to the Home) is currently on the rise. Once laid, fiber optic cables represent an investment that will last for a very long time, as there are practically unlimited reserves in transmission rates, although terminal equipment naturally has to be adapted from time to time. A significant technical advantage of FTTH is also the complete galvanic isolation of the in-house network from the incumbent local exchange carrier's network. Since fresh water and gas grids in Germany have already been galvanically isolated for some time, a building with FTTH is typically galvanically connected only to the power supply grid. This galvanic decoupling dramatically reduces the risk of network hardware dying from a power surge. How many modems and routers died on the old copper network in the past? Clearly too many.
The German market presents itself as complicated for several reasons. Germany is repeatedly labeled as backward, which, however, does not truly reflect reality. In many countries, the transition was made directly from ADSL at 24 Mbps to fiber, resulting in high customer acceptance. In Germany, by contrast, after ADSL at 16 Mbps, VDSL, VDSL2, and VDSL2-Vectoring with up to 250 Mbps were introduced first. Since this is completely sufficient for many applications, fiber bit rates could not exactly knock customers in Germany off their feet. To this day, many of them say they do not currently need to switch from copper to fiber. Furthermore, the transition to fiber is expensive and permanently shakes up the market. Many smaller providers euphorically proclaimed that they could finally dethrone the established operators, but bit off more than they could chew during implementation and even had to file for bankruptcy. A clear market consolidation has taken place only in the cable network sector, as numerous smaller operators have sold their networks to a major competitor, which now claims to be resolutely advancing toward DOCSIS 4.0. However, voices are also increasing that consider DOCSIS to be a technological dead end in the long term.
9. Cable routing
Your network and all the accessories have been in operation for some time. Also, on the whole, everything works fine. You have however the feeling that far too many cables, switches, adapters and, above all, wall plug power supplies are lying around. Furthermore, you are too often busy creeping under the tables to restore a broken connection, of course, after spending some time figuring out why this and that does not work once again. And you have long ago understood that the cables on the floor, belonging to your communications infrastructure, have four enemies: uncharitably acting cleaning staff, pets looking for attention, interested small children, and upset spouses. Tidying up and tying up all the cables are a good beginning, cable raceways are better. In many cases, surface mounted cable raceways fixed high up can be tolerated and they allow, provided they are sufficiently amply dimensioned, to maintain order for decades. Of course, it happens at some point that, if always something is added only, even the largest cable raceway is once full. If the covers can simply not be snapped into place anymore, then the moment has come to revise the entire installation. Please, ask us about cable raceways. We install cable raceways and we can also tell you how 20 meters of DVI, HDMI, DisplayPort or USB can reasonably be bridged and how things look with loudspeaker cables. Besides, we have experience with various technologies and media to transmit Ethernet packages, which range from adapters for PowerLAN to media converters for glass fiber and POF. And, as long as any metallic conductor is routed to another location, topics as galvanic isolation, earth and ground loops, shielding, electrical bonding and grounding, as well as propagation conditions for external electromagnetic excesses, are of relevance. Therefore, the method of cutting through galvanic connections at carefully chosen points and bridging the resulting discontinuities by means of optical connections in the several meters range or even with the help of Wi-Fi is still welcome.
10. Packet routing
In Germany, ADSL was introduced around the turn of the millennium and thus also the consumer-level routers. These consumer-level routers were initially small and modest devices that consumed only a few watts of power. They worked fine until complex Wi-Fi encryption algorithms came into fashion, which in general could no longer be executed on the processors. This is why DSL routers today contain much more and, above all, much faster silicon than in the past, and are therefore able to provide, besides the realization of the Internet connection, a variety of services based on it. Also the user interfaces have been improved more and more, so that the mechanisms, which are quite complex in themselves, can be understood and configured by many users. In particular, routing is completely preconfigured today, so that a normal user has almost nothing to do. The situation is different once you operate multiple networks, perhaps connect them via VPN, and want to make off-the-shelf devices like a printer visible across all these networks without giving up network separation. Under such conditions, routing begins to become interesting. We would be pleased to assist you in this regard.
11. Wi-Fi
Wi-Fi, a registered trademark of Wi-Fi Alliance, stands for fully developed and highly complex technologies as well as for certified products to undertake Wireless Local Area Networking (WLAN) based on the IEEE 802.11 standard family. Today, Wi-Fi is present in practically every household, in which notebooks, smartphones or similar devices are operated. Phenomena in regard to Wi-Fi connections, which occasionally escape one's attention, are the following ones. With worsening transmission conditions, it is first of all possible that it is switched back to lower data rates. If the transmission conditions deteriorate further, the proportion of incorrectly transmitted packets grows dramatically and, in the end, the connection drops every now and then. Every now and then, because in limit cases it is constantly tried to reestablish broken connections. Thus, the machinery gives up very late. Such occurrences are in addition obscured by protection mechanisms of superordinate protocol layers. Consequently, inattentive users do not perceive the activities that actually happen, such that they do not understand why their data transmissions are unbearably slow in some cases. If the data rates do not meet the expectations at locations somewhat more distant from the access point, then setting up several access points generally provides a solution. We will be glad to analyze your situation, advise you and provide you with environments with more than one access point. We use, for example, this Wi-Fi access point to make the guests of our garden parties happy with their smart devices.
12. Telephony
Meanwhile, VoIP has been widely enforced. Since the turn of the millennium, VoIP on SIP basis has gone from better than nothing to works quite well. It looks like local exchange carriers are now prioritizing VoIP packets sufficiently high. It further looks like VoIP works perfectly in well-managed intranets. Finally, it looks as privately established VoIP connections suffer less from insufficient prioritization than they used to, which has to do with ongoing network development, but are of course still vulnerable. Nevertheless, there is still a lot to be done and there are a number of things to consider. For example, telecommunications service providers in Germany guarantee end customers 97 percent availability for VoIP telephony, which means nothing other than being without a phone for eleven days a year at worst. Regarding analog telephony, one remembers availabilities greater than 99.7 percent, or one day a year without a telephone. Even such things, that without additional expenses ordinary VoIP-based telephony equipment fails to work on electrical power outage, need at least be considered. No question, VoIP is the future and it is getting better and better. Seidl Technologies has many years of experience in this field. Ask us if you want to know what to do in which case.
13. Image gallery
14. The end
Once you have arrived here and feel that your Internet access, your network, your Wi-Fi, and your telephony are fine, then sit
back and enjoy the content the Internet provides for you 
. Otherwise, please work once again through the above summary 
.