For many years ISDN30 has been the only way to provide telephony to large buildings. The technology works and is tried and tested, however it is relatively expensive and inflexible.
SIP trunks are the modern alternative to ISDN30. Calls are carried over IP networks using your data connectivity rather than the conventional Telecoms’ network. SIP trunks are substantially cheaper than ISDN30 (subject to you having appropriate data connectivity) and as the phone numbers become non-geographic you can move buildings and still keep your phone numbers.
Our VoIP for BUSINESS product range provides:-
SIP trunks and Hosted Telephony
working seamlessly on the same network
powered by BT Wholesale
integrated with 15 of the top CRM systems
Ring 0800 668 1717