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VOIP SIP Trunk Telephone Service for Avaya IP Office

Discountcomms SIP Trunk Lines for Avaya IP Office and QE Systems

SIP (Session Initiation Protocol) is a worldwide protocol used to control telephone
calls over IP between devices. Discountcomms in partnership with Voiceflex can quickly and efficiently provide a SIP based telephone solution, which can be routed end-to-end over the internet or breakout to existing landline or mobile carriers.

Discountcomms service with Voiceflex is a pure B2B service. SIP Trunks are the next generation, replacing ISDN Trunks. All the leading telephony manufacturers support SIP Trunks. Voiceflex SIP Trunks operate on any xDSL connection, we don't need a fixed IP address. Our service operates via account verification and password, far more secure and adaptable than a fixed IP address.

Call rates from Discountcomms/Voiceflex are extremely low, 1p per minute to UK Landlines, 2p per minute to Europe, 8p to Mobiles etc.
Calls between our trunks are free, so if you install them at different offices you can get free calls between all sites.

Rental is from £6 per month per line, much cheaper than a standard BT line.