09-24-2015 12:07 PM - edited 03-17-2019 04:23 AM
1. Lost server connection - On top of the phone display 2. Conference call in preservation mode - On line-1 button.
How to troubleshoot this issue ?
Regards,
Aniket Raut
09-24-2015 02:43 PM
Is this particular to this phone model only??
You don't mention what's your call control, and version.
09-25-2015 07:04 AM
Hello Jaime,
Unfortunately customer is having only this model. So not sure if it is model specific.
We are using 10.X
06-29-2016 05:15 AM
Having a similar issue with 8865. I just upgraded firmware to the latest 11.5.1 last night on 1 phone having the issue (1 of the very few users that
SIP - 10.5
01-11-2017 08:34 AM
im having this occasional issue too, so far only 1 user with CP-8845 sip phone. I checked routers,switches no drops/flips. btw phone and CUCM is pptp link 500mb with qos, no congestion, just 60 mb utilized at that time. The " utils core active list" command shows no file.
Real time sip trace on rtmt shows "cancel" coming from CUCM but i cant open it. Can't collect trace from rtmt for that time, CM has sdl files only for "Today" :(
Any tips to find root cause and how to fix trace issue ?
01-11-2017 08:43 AM
Bekzod,
In the end it was an issue between our CUBE & CUCM. I enabled Media Termination Point Required option checked on the SIP Trunk.
We have not had this issue since... plans to upgrade our CUBE this year.
09-24-2015 04:13 PM
You're most likely facing a network connectivity issue between the phone and CUCM that's causing it to go into SRST mode.
If the phone crosses a WAN to reach CUCM, check the QoS configuration and bandwidth utilization on the WAN circuit. If the phone has LAN connectivity to CUCM, check the LAN QoS.
It's also a good idea to upgrade to the latest firmware available for your phone model.
09-25-2015 07:00 AM
Hello brian,
Is there any way to find out network connectivity issue. Can we collect any logs from RTMT to prove same.
And we are not using SRST.
09-25-2015 08:17 AM
Hi,
This message means that phones lost connectivity to call control server (CUCM or CME) during conference call. In this is the case and you don't have SRST, then softkeys won't work and call won't be terminated by call control server (for the call to be terminated, you need to enable media-inactivity detection).
Are these phones remote to call control or same LAN?
09-25-2015 08:48 AM
How to enable media inactivity detection ?
What will happend if i enable this ?
Call Manager belong to 192.168.58.x
IP phones belong to 192.168.60.X
09-25-2015 11:19 AM
Are these two subnets connected over WAN? May be you need to check your WAN and the reason for connectivity drop.
Regarding media-inactivity detection (note this will impact preserved and non-preserved calls. In h323 you can limit this feature to preserved calls only):
RTR(config)#gateway
RTR(config-gateway)#media-inactivity-criteria ?
all Both RTP and RTCP for silence detection
rtcp Use RTCP for silence detection
rtp Use RTP stream for silence detection, this is default
rtplib Use RTP ( comfort noise = activity) for silence detection
This feature is controlled by two commands which are ip rtcp report interval global command and the timer receive-rtcp gateway-level command. The multiplication of both commands will generate inactivity timer.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide