New internet connectivity services now available from EXS for your business...

No technology has ever been an overnight success. ISDN took 10-15 years to be fully accepted in the UK, the service was originally sold as a voice and data offering, the data side soon dropped being far too slow and complicated. It's time to provide customers with an alternative.

Why haven't ISDN carriers started selling SIP? To be fair to the incumbents, if I had invested millions of pounds in buying and millions of pounds in maintaining ISDN exchanges, I would also be sweating the assets for as long as possible.

To use SIP trunks you need a good data connection. For sub-10 SIP trunks ADSL2 and ADSL2+ is a cost effective and reliable service with the same Service Level Agreements (SLS) as PSTN or ISDN. For larger installations EFM is the true alternative to ISDN30.

EFM has two services, one offering up to 10Mb and the other up to 20Mb, providing you with the ability to route voice and data over the same circuit. EFM is supplied with a standard SLA of 6 hour response 24/7 which blows the SLA for ISDN out of the water.

SIP is an application running over a data connection. Due to this alone it's far more flexible than ISDN. Unlike ISDN which has a set amount of features (ETSI standards). SIP features and applications are carrier dependent, so choose your supplier carefully.

Pricing to follow....