- a cluster : one PUB & one SUB (CallManager 184.108.40.2060-1 )
- 80 IP Phones (20 7940G & 60 7911 )
- 15 Switches 2950, one 4507 for VTP Server.
- 12 VG224 for analog phones
Trunks between Switches using Etherchannel, everything is working properly.
I found a problem that:
when electric is lose, IP Phone can not register to CallManager when electric is come back. The status of IP Phones always display " Registering". Howerver, VG224 (analog phone) work normally and some IP Phones can register with CallManager after 4 minutes.
To solve problem with Unregister IP Phone, I must log-in to Switches, "shutdown" port and after that is "no shutdown".
Any ideas to solve this problem ?
Here is my configuration:
switchport access vlan 5
switchport trunk native vlan 5
switchport mode trunk
switchport voice vlan 150
mls qos trust cos
SWITCH 2950 IOS: c2950-i6q4l2-mz.121-22.EA8a.bin
CALLMANAGER VERSION: 220.127.116.110-1
IP PHONE FIRMWARE:
- OS LOAD ID: cnu11.3-1-2-26.sbn
- BOOT LOAD ID: tnp11.3-0-1-20.bin
- DSP Load ID: dsp11.1-1-2-26.sbn
- Load file: sccp11.8.-0-3s
- App load ID: jarsccp.8-0-2-25.sbn
- JVM Load ID: cvm11sccp.8-0-2-25.sbn
I think problem can relate to Switch ?? (IOS version of Switch???)
Can you try a different firmware and see if this makes any difference ? I have seen certain phone loads on 7941/7961 having similar issues, and i have had to unplug the cable (equivalent to shutdown on switch port) to bring the phone back to normal.
So then its either the firmware or SR with CCM5. Call TAC, but if unit is unsupported, try to install the latest firmware on the CCM5 and initiate your own 'power loss'
If at all possible, have your laptop into a port on same switch with same Vlan assignment. Setup as DHCP client and put a continous ping (ping -t)on 4X00. Pull power on 2950 and restore. If the Laptop comes up fine and starts pinging again, then its likely the CCM and/or phone firmware.
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