Sample Application; Figure 2: Call Completion Feature Code - Grandstream Networks UCM6100 Manual

4. Feature code for call completion request can be modified on web GUI->PBX->Internal
Options->Feature Codes page. The default setting is *11 for "Call Completion Request" and *12 for
"Call Completion Cancel".

SAMPLE APPLICATION

Assuming user A is using UCM6100 extension 1000, and user B is using UCM6100 extension 1001. Both
extensions have "Enable CC" selected and "CC Mode" set to "Normal" as mentioned above.
1. Extension 1000 calls extension 1001.
2. The call fails to be established due to the following possible reasons:
a) Extension 1001 is busy, e.g., talking on the phone.
b) Extension 1001 rejects the call or the call goes to timeout.
3. At this time, extension 1000 dials "Call Completion Request" code (*11 by default) to activate camp on
feature. Please note "Enable CC" option must be selected and "CC Mode" must be set to "Normal" for
both extensions 1000 and 1001. Otherwise the user is not allowed to dial the call completion request
code.
4. Once extension 1001 becomes available, UCM6100 will call extension 1000. Extension 1000 has to
answer the call. The following conditions for extension 1001 are considered as available:
a) If extension 1001 was busy when 1000 called 1001, 1001 is considered as available after the

Figure 2: Call Completion Feature Code

UCM6100 Busy Camp-on Guide Page 4 of 10