Nowadays, if you check the public IP address with which you access the Internet, you will find that it often changes. This is due to the chronic shortage of IPv4 addresses, which are insufficient to cover current service demands. ISPs, therefore, often assign dynamic public IP addresses and mechanisms, such as Carrier Grade NAT (CGNAT), to allow various client devices to connect through a single...
Special services are offered via analog or ISDN connections in combination with terminal devices by service providers. The particular challenge is now to guarantee the customer all these special services despite the on-going migration to ALL-IP. For the customer, the question is: will it work and who is responsible for it? First of all, let us have a closer look at these special...
As already announced in our previous blog entry, we will have a closer look into the two ALL IP approaches: migrating the ISDN PBX or replacing it via a new IP-based voice and data solution. Migrating the ISDN PBX Migration means continuing with the already existing PBX whilst a media gateway takes care of the ISDN connection from the PBX’s point of view. The biggest advantage related to...
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...
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...
Some countries switch off their telephone network in the near future. ALL IP is as previously mentioned one of the main buzz words. The shift to VoIP has already started and now is the right time to ask ourselves: “Do we need VoIP security?” VoIP security in this context doesn’t relate to firewalls, firewall problems in VoIP protocols or anything like that, but refers to the basic problem of...
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