voice sip

voice sip

What is voice sip?  Essentially it’s a broadband line specifically for your voice trunk circuits connected into your PBX or office voice processing platform.

SIP stands for: Session Internet Protocol.  It’s akin to VoIP as it uses the same technology externally to your local area network.

If you’ve heard of BT 21CN (their 21st Century Network project) then you’ll probably have hear of voice sip and hence why you’re reading this article.

Why has voice sip occurred?  Well it’s a natural progression of voip into the outside world.  Ah, but you say that it works already over the internet.  Quite right, but sometimes the quality isn’t very good, is it?  This is to do with the volume of data traffic over the web routes – just like motorways, major and minor roads, slow up and perhaps grind to a halt when the number of vehicles gets excessive – contending for the fastest way to the destination. In LANs and WANs the Layer 3 and 4 switches and routers have a feature called QOS that prioritise voice packets over other types so that they have the best chance of arriving in real time.  This is what voice sip is intended to achieve.

Telephone Systems Direct will recommend that our customers delay choosing voice sip until the BT21CN progresses to a completion in late 2010.  ISDN is still the trunking giving superior performance.  0800 652 8052 for more info on voice sip.