Why does Barge fail and result in a fast busy tone on my Cisco 7906G IP Phone?
Barge can fail if you attempt to barge an encrypted call using a phone that isn't configured for encryption. In this case, the phone will play a fast busy tone.
Why does Join fail on my Cisco 7906G IP Phone?
Join requires multiple selected calls. Ensure that you have selected at least one call in addition to the active call, which is selected automatically.
Why does Cisco CallBack fail?
Cisco CallBack may fail if the other party has call forwarding enabled.
What to do if my Cisco 7906G IP Phone does not go through its normal startup process?
If your Cisco Unified IP Phone isn't starting up normally, there might be a few reasons. First, check the Ethernet cables for faults or bad connections, and make sure there are no network outages or power issues. Try swapping the Ethernet cables with ones that you know work. You can also try connecting a working phone to the same network port to see if the port is active. Another solution is to connect the non-starting phone to a different, known-good network port, or directly to the switch, bypassing the patch panel. Verify the phone is getting power; if using external power, check the outlet. If using in-line power, try an external power supply. If using an external supply, try a different one. Powering up the phone with the handset off-hook can also help. As a last resort, try a factory...
General| Ethernet Ports | 2 x 10/100 Mbps |
|---|---|
| Power over Ethernet | Yes |
| Lines | 2 |
| Supported Protocols | SIP, SCCP |
| Handset | Yes |
| Volume Control | Yes |
| Protocols | SIP, SCCP |
| Headset Port | 2.5 mm |
| Weight | 2.2 lbs |
| Power Source | PoE or AC adapter |
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