====== 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 | |