| Please contact to any SIP based IP-Telephony service provider in order to get the following SIP settings: | ||
| 1. Login Id or User name. | 3. SIP Proxy/Gatekeeper IP or FQDN. | |
| 2. Login password. | 4. SIP outbound Proxy IP or FQDN. | 5. Display Name |
| Note: Leave Display Name and/or SIP outbound Proxy blank if your ITSP (IP-Telephony service provider) does not provide these settings. | ||
| If user is behind the NAT/firewall/router then these problems can occur: | ||
| - Unable to register to the proxy server. | ||
| - Call is connected successfully, but unable to listen the other end. | ||
| To resolve these issues, ITSP (IP-Telephony service provider) support SIP OUTBOUND PROXY. Outbound proxy is the only way to let the NAT/firewall user make and receive phone calls. | ||
| If the NAT/firewall router does not support SIP pass-through, you need to consult your ITSP if they support SIP outbound proxy. Since different NAT router vendor implement NAT differently. | ||
| Typically ITSP may provide SIP outbound proxy to resolve NAT pass-through issues. | ||
| Email: support@vaxvoip.com | ||
| Web: http://www.vaxvoip.com | ||