SWERN User Group, Exeter
26 January 2011
SIP Trunk Overview Session
VoIP Unlimited has been providing business grade SIP trunks since
Feb 2006.
This session highlights some of the SIP trunk features and provides
example scenarios where SIP trunks have been effectively deployed.
Questions are actively encouraged.
Contact: Steve Bieniek
01202612021
Email: steve.bieniek@voip-unlimited.net
Features of the SIP Trunk Service
• Number Porting – port from any Network Operator/Range holder who has a porting agreement with BT
• Virtual Numbers – provision new numbers from every UK area code, out of area presence
• CLI “Spoofing” Supported – increased outbound capacity
• T38 fax support – central management of all organisation’s fax lines – cost reduction in fixed lines
• Connectivity – SIP trunks run over any IP connection 80k / 40k per call
• International Numbering – new numbers from over 5000 cities across the world
• Track Record – Business level solutions since February 2006, through 300+ UK channel partners
• High Availability - Network infrastructure based in multiple data centres in London, Docklands
• Any SIP device – SIP standard universally supported
• Fast deployment – Add new DDIs/trunks within minutes
• Portal administration – call diverts, trunk registration checker, run sip traces 24/7
• Low risk exposure – anti-fraud detection, black list, credit control – live environment
• Register anywhere – Form part of Business Continuity strategy
• Low cost – starting at £10.99 month for “Unlimited” channels
Applying the Technology – Potential Business Scenarios
Example 1:
Office Relocation – number porting
Customer A is based in North London and is moving their business operations to Reading, Berkshire. They have
8 channels of ISDN30 and 20 DDIs and are out of contract with their current provider BT.
As they are not able to transfer their BT numbers onto ISDN30 in Reading due to changing BT exchanges, they
choose to port them into VoIP Unlimited, saving them a potentially expensive re-marketing effort.
The port costs £100.00 + vat one off and takes 20 working days to complete.
Prior to the office move, VoIP Unlimited provides their BT numbers as “spoofed” SIP accounts so they are able
to deploy outbound calls over IP immediately, presenting their inbound BT numbers. This allows the customer to
configure their IPPBX well in advance of their move.
As soon as Customer A signs the lease on the new building, VoIP Unlimited will order them their BT analogue
Lines, enabling a business grade VoIP Optimised ADSL2+ circuit on one of the lines specifically for their voice
and a data broadband connection for their web browsing and email requirements.
Customer A uses inbound fax to email services as they are also porting their single fax line in to VoIP Unlimited.
Applying the Technology – Potential Business Scenarios
Example 2:
Using SIP over Ethernet
Customer B is a travel based call centre in Manchester with three ISDN30s, SDSL and a 2Mb internet leased
Line connection. A significant amount of their outbound calls are to land line and mobile destinations in Europe.
The customer is looking to double the size of the call centre over the next year and requires more inbound and
outbound capacity but is concerned with the additional costs and lead times in doing so.
VoIP Unlimited provide a 10Mb Ethernet circuit into the customer’s office and port their numbers into the VoIP
platform. The customer runs their calls over this IP connection, providing them with a reliable method of inbound
and outbound call routing over SIP trunks directly into the VoIP Unlimited core network.
International call charges are cheaper with per second billing and no call connection charges.
This level of connectivity not only replaces two of the ISDN30s (one kept for redundancy), but it allows for an
increase in call capacity as and when required.
Internet access is also supplied down this line.
The service level agreement on this line provides 24/7 365 support, matching the enhanced care option he has
on the ISDN30. In-fact the monitoring tools enabled on the IP connectivity are far superior to that of the more
traditional infrastructure he is used to.
Questions…?
Thank you