Call Forward
The following methods of call forwarding are supported:
| ■ | Immediate: incoming call is forwarded immediately and unconditionally. |
| ■ | Busy: incoming call is forwarded if the endpoint is busy. |
| ■ | No Reply: incoming call is forwarded if it isn't answered for a specified time. |
| ■ | On Busy or No Reply: incoming call is forwarded if the port is busy or when calls are not answered after a specified time. |
| ■ | Do Not Disturb: immediately reject incoming calls. Upon receiving a call for a Do Not Disturb, the 603 Decline SIP response code is sent. |
Three forms of forwarding parties are available:
| ■ | Served party: party configured to forward the call (FXS device). To configure this type of forwarding party and per endpoint, see Configuring Call Forward. |
| ■ | Originating party: party that initiates the first call (FXS). |
| ■ | Diverted party: new destination of the forwarded call (FXS). |
| ● | When call forward is initiated, the device sends a SIP 302 response with a contact that contains the phone number from the Call Forward table (see Configuring Call Forward) and its corresponding IP address from the routing table (or when a proxy is used, the proxy’s IP address). |
| ● | For receiving call forward, the device handles SIP 3xx responses for redirecting calls with a new contact. |