1. SWERN User Group, Exeter26 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.netsteve.bieniek@voip-unlimited.net

2. 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 organisations 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

3. 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.

4. 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 customers 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.

5. Questions…? Thank you