I have CISCO 7940s and 7960s deployed over a site. When a call comes thru on the 1st line of a 7940, the user answers the call. During this process if there is another call which comes to the same number, which gets rolled over to the second line, the first call gets frozen.
Unless some one else picks up the second line, the user is unable to do anything with the first call.
This is the first time I have encountered this issue.
Would any one be able to shed some light on why this is happening and how it could be rectified.
Here's basically what it says. Let me know if it helps.
With the current implementation, an IP phone can only handle two calls per line. When you transfer a call, the phone will actually first initiate a new call to the transfer-to phone and then transfer the first call. This means that with every transfer there will be two active calls on the line.
When call waiting is enabled, an IP Phone is able to accept two incoming calls on one line. Because of the above requirement, you will not be able to transfer any of those calls. This would require another line instance to initiate the additional call towards the transfer-to party.
When there is more than one line on an IP phone, the solution is to disable call waiting and configure the first line with Call Forward Busy to the next line.
If there is only one line on the IP phone, you can also disable call waiting. However, in that case it will only be possible to receive one incoming call and a second incoming call will be transferred to the Call Forward Busy extension configured for that line.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
Over the last few months, I have had the privilege of working on SI...
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...