SIP Trunk Technical Information

The SIP Proxy and SIP Authentication information will be sent to you once you have signed up as a new customer.

Codecs supported g.711a (PCMA)
INVITE number format e.164, ie to call 01224 900123 please send as 441224900123
Caller ID format, where applicable In UK National format, ie 01224900123
International CLI format e.164 with leading +, ie +441224900123 (acceptable for UK CLI also)
Other requirements
FROM username must equal your SIP username
SIP Registration is not supported
Outbound calls are validated with username and password authentication