SIP Soft Phone and Remote Survivability

Remote survivability is the ability of a remote location to continue to operate in some (typically limited) capacity when the connection to the main location is down. In this scenario, the CIC server is unreachable, meaning that the CIC client application cannot function, even though the SIP Soft Phone is still running. The local SIP Proxy server and SIP gateways are available also.

For more information about remote survivability, see Appendix B: How Registrations Work (Proxy Settings).

In a remote survivability scenario

1. SIP Soft phone users can place outbound calls using the SIP Soft Phone dial pad. To access the dial pad, do the following:

   1. Right-click the SIP Soft Phone icon in the system tray and then click Dial Pad.

   2. Using the dial pad, you can provide phone numbers to dial and have call control over those outbound calls.

      

      The calls go directly from the SIP Soft Phone to the proxy server, which routes them out the local gateway.

2. SIP Soft Phone users can receive inbound calls, but the SIP Soft Phone cannot alert users about the calls. The SIP Soft Phone relies on the CIC client for this functionality, and CIC client is not available. Users need to have the SIP Soft Phone Dial Pad open to check for calls.

Because the SIP Soft Phone does not alert or pop for inbound calls, the SIP Soft Phone is not practical, and therefore, not supported as a remote survivability solution. Physical devices such as Polycom phones and Interaction SIP Station phones are more practical in a remote survivability situation.