In 4.2 Unity will send a test message to the phone. The purpose of the test message is to (1) verify that a connection to the phone can be made, (2) that the username and password are correct and (3) that the phone is able to send us information back. The test message itself just contains the letters "abc". It's expected that the phone will return with an error message that says that the request is bad. This confirms points 1, 2 & 3 above.
If Unity reports that the phone responded in an un expected manor than none of the steps above succeeded. There are two primary reasons for this. First the phone may not have responded within the 3 second time frame it is allowed maybe due to network latency, or two the phone may just not be responding perhaps because of firewall issues or other problems.
The easiest way to trouble shoot this is to first test the phone by using a browser and surfing the phone's IP address. The phone should publish a basic information web page. This will confirm at least that the phone can be talked from Unity. Also, to get the IP address of the phone you can go to the CCM admin or to the phone and pull up it's network settings. If that seems okay, then the next step is to take a network sniffer and watch traffic between Unity and the specific phone in question. Once you are sniffing traffic between Unity and the phone, place the call and then take a look at the HTTP traffic between the two. You should see Unity sending the "abc" packet and then the phone responding with a CiscoIPPhoneError. If this exchange appears to happen but the phone is still not working, take a look a the time stamps for the packets and confirm that it is all taking place in less than 3 seconds. Unfortunately for 4.2 the 3 second time frame is hard coded.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...
You have reached the Cisco Logistics Support Center.. To Check Status of your RMA, visit Product Returns & Replacements (RMA).
Need help? Contact us by Phone or Email.
Phone: 1800 553 2447 Option 4