MAYAH Communications

Technology Highlights

Requirements for SIP based connections via the public Internet

The first part of a successful SIP testing / integration is the selection of an appropriate IP-connection. In Germany for example there are quite a lot of regional and big service providers that offer S-DSL links with useful capacities starting at 2 Mbit/s. When getting in contact with a service provider in your country please take the following points into consideration:

Ask about prices for an S-DSL link
Capacity: minimum of 2 Mbit/s
Be sure to get a minimum of 3 public IP-addresses (recommended: 16 public IP-addresses)
Ask about quality of service (QoS) in the providers network

All SIP-clients need to register at a specific SIP-registrar. This can be a device in the same network or at any IP-address that can be reached over the public internet. The SIP-registrar is the key to SIP connections as it may be regarded as a kind of phone book or database with all available clients. If you are interested to do SIP testing at the moment, it is recommended to acquire your own SIP registrar. There are many different models available on the market, such as the LANCOM 1722 VoIP for example. Then if you start working with SIP you only need to register as a “SIP user”. All other settings are directly configured at the client (e.g. CENTAURI II). Please note, it‘s possible to use public SIP-registrars instead of using your own. However you always need to check if all the required features are supported by a public service.

Further information on Audio-over-IP and SIP for high quality media links you can also become in the course of MAYAH’s Audio-over-IP seminars: November 15 & 16 (English), November 26 & 27 (German).

For agenda and registration please follow this link »