You may not have heard of voice over LTE (VoLTE) technology, but that does not mean you are not using it!
Carriers around the world are deploying this technology to get rid of GSM or CDMA-based circuit networks. The first commercial solution was presented in South Korea in August 2012 and most mobile terminals already support it.
Pablo Alonso: Pablo Alonso is Telecommunications and Development Engineer in the Teldat R&D Department. Within this department is part of the team dedicated to the Industrial & Mobility business line and he is specialized in cellular connections.
If we were to summarize the current situation in the ALL IP market, we would see that the migration from ISDN to ALL IP has reached a stage where the number of IP-based telephone connections has exceeded other fixed-line connections such as analog or ISDN. In contrast to other VoIP/SIP providers, Germany’s largest carrier has not been able to offer SIP trunk connections in the last year, thus many business customers could not migrate from ISDN point-to-point connections to ALL IP. Another important point to mention is that the offer of cloud-based ICT solutions has increased therefore migration to ALL IP is even possible for non-office environments.
It is no new that ISDN will soon be switched off. Up to what point the whole procedure is planned to be done is also well known. There will be no or almost no delay because the necessity on the part of the carriers is clearly articulated and mandatory. Companies are forced to take action sooner rather than later. Two possible solutions are available for the conversion to ALL IP.
It is time for a “new” network
Technically speaking, ISDN stands for Integrated Services Digital Network, from the user’s point of view, a long-standing, stable, and reliable communication network which standardizes a digital telecommunications network and unifies various services such as telephony, data, teletext or datex-P on one single network. Previously, each service required its own network and all networks were connected via gateways.
The term ALL IP means unifying and converting all currently existing transmission technologies in telecommunications networks on the basis of Internet Protocol (IP). Thus, services such as telephony, television and mobile communications will be provided by means of a uniform network protocol and no longer via the classical circuit switching. The switch to IP-based lines significantly reduces the complexity of networks while the number of operating network components decreases.
The migration from ISDN to ALL IP initially affects private and small business customer’s point-to-multipoint connections. Business customer’s that frequently used point-to-point connections (buzzword: SIP trunk) are expected to be switched off by Deutsche Telekom at around the time of CeBIT 2016 and alternative carriers are even one step ahead.
From the end of 2015 Deutsche Telekom offers its business partners up to eight parallel voice channels. Due to regulations, customers with more than ten phone numbers per basic ISDN connection currently have to apply for a second ALL IP connection in order to keep their phone numbers. Hence, it makes sense to actively develop an approach already in the run-up phase or to consider changing to another provider.
When evaluating which decision to take, one should consider how old the current operating PBX is, whether it is worth purchasing a new one, or whether the PBX has only been operating for a few years and it already supports VoIP. In the end a simple, economic cost-benefit analysis needs to be undertaken and an evaluation made.
Two options are available for the switch from ISDN to ALL IP
One solution is the migration of the already existing ISDN infrastructure by means of an ALL IP media gateway and the alternative is the replacement of the PBX by an ALL IP communication solution for both voice and data which can be integrated into the network infrastructure.
Teldat with its very long tradition in the telecommunication and IT market, provides both approaches: migration as well as the integration of an ALL IP communication solution. In our next blog entry we will look further into the available solutions for both approaches.
Deutsche Telekom’s customers have to face the fact that their service provider means business. Over a year ago Germany’s largest service provider started cancelling analog and ISDN connections if their customers refused to migrate their voice connection to VoIP.
The customers had to choose a new tariff otherwise Deutsche Telekom would terminate the contract. The provider’s plan is now to switch its whole network in Germany to ALL IP technology by the end of 2018, although they previously had a more ambitious goal of 2016. All this, without affecting their ongoing business.
However, the switch to this new technology for the service provider Deutsche Telekom, is not the first time and not a single case in Germany. Already in 2013, Deutsche Telekom’s daughter Makedonski Telekom switched its complete telephone network to ALL-IP. During 2014, the network in the Slovak Republic was converted and since the beginning of 2015, Croatia as well as Montenegro were affected, followed by Hungary. By the end of 2018, not only Germany, but also Romania and Greece should have an ALL-IP network.
Migrating all analog and ISDN connections to ALL-IP achieves numerous advantages for the service provider. In particular, a separate phone network no longer has to be maintained. Simply a DSL connection is needed in order to provide the customer with Internet data and telephony which results in notable cost benefits for the service provider. The customer benefits from a better service, shorter time to market and a faster network with less latency. Telephony is carried out via Internet protocol. Broadly speaking, users speak to each other on the phone over the Internet which is called VoIP (Voice over IP). This technology means that fixed telephony no longer has reserved its own frequency band for the voice transmission. Phone calls will be embedded in Internet data (the Internet Protocol – IP) and transmitted together with other Internet data traffic. A splitter separates the connection of the customer into a telephone and a data line. Thus, even during phone calls the user depends on a working DSL connection, which means a working provider software, as well as a satisfactorily high quality DSL connection.
Teldat has looked into the subject of ALL-IP as a whole and is a qualified ALL-IP partner for SMEs and large corporations, including integrators. The manufacturer has come up with various ALL-IP solutions. Looking back on a very long tradition in the telecommunication and IT market, Teldat attracted the service provider Deutsche Telekom as a customer, especially in the new technology ALL-IP.
Heidi Eggerstedt: Heidi Eggerstedt is part of the bintec-elmeg's Marketing Department. Within this department she is responsible for Marketing Documentation and Translations
How can we help carriers dismantle their ISDN networks easily, economically and above all, transparently?
Traditional ISDN and POTS communication networks are now obsolete. Deployments using old technology, the devices making up these networks, etc., have reached, in many cases, the end of their lives. Another influencing factor is that experts and technicians in this field are approaching, or have even reached, retirement.
However, there are still millions of lines in service and millions of clients who use them on a daily basis, both at home and in companies, not only for voice communications but also for data. Communication carriers, the owners of said networks, are faced with the unavoidable fact that they must replace them with new technology. The dismantling of the old network goes hand in hand with deploying the new ultra-broadband.
Migration from traditional telephony to IP
The migration of traditional telephony to convergent services based on IP, plays a key role in dismantling the net. While data has been transmitted over IP for quite some time now, the vast majority of telephony services still continue to use the old ISDN and POTS networks.
One of the most important goals for carriers is to keep their customers during said migration. The latter, when faced with radical or abrupt changes, may well decide to change providers. Given this, the change for the end-user must be as transparent and staggered as possible while still meeting customer demands.
This boils down to three main factors:
- Customers should continue to use their existing voice infrastructure (PBX and phone handsets) for as long as they wish.
- The new networks retain all the advanced features currently used by said customers
- Quality of service remains optimum.
The carrier must be able to efficiently mass deploy the new convergent services. Integrated with the modern management and installation systems, all featured in ultra-bandwidth networks, the converging infrastructure, usually based on TR-69, must have zero-touch configuration ability.
Moreover, carriers require on-site product lines for customers, which integrate the advanced features of ultra-broadband networks, accessed through corporate devices, together with advanced telephony features: IP switchboards and media gateways for example. A perfectly integrated ecosystem of features and accessories (IP and DECT telephones, or wireless access points), for both voice and data, together with access routers, provide both customer and carrier with a simple, flexible, professional approach to new fully convergent IP.
The Teldat Grouphas been selected by a major ISDN network carrier, as the principal supplier to enable customer migration from ISDN to IP. Teldat’s expertise in telephony systems together with their successful range of access routers for carrier managed services, made them the ideal choice.
Eduardo Tejedor: Telecommunications Engineer, Teldat V.P. Strategic Marketing