I am having a Vg224 registered with CCM using SCCP. In an analog phone when a call comes and if it is picked after first ring, there is no voice on either ends. The voice flows if the receiver is picked after two rings.
When I removed the "caller-id enable" on the voice-port, the issue is resolved.
1) Can anyone tell how this command is related to my problem?
2) Now the issue I am facing is I am not getting any CLID for incoming calls because caller id is not enabled on that port. Is there anyway I can enable CLID, same time by which I can answer my calls within first ring? Please help.
This is due to Bug ID CSCsi81450. At this stage, the only workaround in SCCP operation is to disable the caller ID on the voice port, or wait until the port has rung a few times instead of picking it up in the middle of the first ring cycle.
You can downgrade to an earlier release of IOS such as 12.4.9T7. I can't see a release schedule for the fix in 12.4.15T code, but you could also try 12.4.15T2 when it is released on Cisco.com around the 18th of January 2008.
According to the bug notes, the developers needed quite a few debugs to be enabled for them to pick up the differences between a good and bad call -
deb voip ccapi inout
deb voip vtsp all
deb voip dsmp all
deb voip dsm all
deb voip hpi all
deb voip dspapi all
deb vpm signal
deb sccp all
It's not really feasible to capture all these debug traces and break them down in this forum.
The Bug release notes may help you out -
One-way audio when calling to an analog phone attached to a SCCP controlled FXS port on a Cisco IOS VoIP gateway.
The typology when this problem is seen is shown here:
A voice-port configured for 'caller-id' as shown in the example below may experience one-way audio (no audio in the direction towards the analog phone). This can occur when the FXS port is SCCP controlled and the called party on the attached analog phone picks up the call before the first ring completes.
ring cadence pattern02
timeouts ringing infinity
When the voice-port has caller-id configured.
Causes one way audio in voice calls between analog phone and SCCP phone
connected to Cisco IP Phone
Remove 'caller-id' under the voice-port , switch to MGCP or H323 instead of SCCP/STCAPP or wait for couple rings before going offhook on the FXS port.
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. North Americas Phone: 1800 553 2447 Option 4
Email: email@example.com Europe Phone: +3...
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...