Remote Location Phone Suddenly Not Working

[Razmir Masri Abdul Razak]

Hi All,

We have 1 CUCM cluster with 2 Servers 1 PUB and 1 SUB at main site. We have another remote location site that is runnning a few units of phone which is connected using leased line. We have just upgraded our callmanager version to 8.5.1.11900-21. Before this we are running version 8.03. A few days after upgrade, all the phone at remote site cannot register into the callmanager, the status in call manager is Rejected. We have already open Cisco TAC case and it seems they also cannot solve the issue. The only workaround is to convert all the phone to SIP then only is it able to register into CUCM. Cisco suspect that firewall is blocking SCCP port 2000 but the weird thing is we got 1 units of Cisco ATA that is running SCCP successfully registered and running normally. We even bypass our firewall for direct connection between 2 sites and it's still in rejected status. Factory reset the phone and deleting/adding the phone inside the CUCM did not help either.

FYI,

Currently we are running version 8.5.1.11900-21

Phone that is running at remote site: Cisco IP Phone 7940

Phones seems able to download firmware from TFTP but it looks like it cannot get the configuration file.

Anyone experiencing this problem?

Thanks

[Razmir Masri Abdul Razak]

Hi

I just google around and found out that SSG don't support SCCP version 17. If you have access to the firewall, please try this guide from Juniper. I hope this can solve the problem. Please let me know if this works. My ISP router is using SSG for site to site connection between our remote site but i dont have access to it.

http://kb.juniper.net/InfoCenter/index?page=content

[guillaume.roux]

Hi,

Good news!!!

Effectively CUCM 7.X, 8.X and ip phone firmware versions newer than 8.3(5) use SCCP version 17. The older CUCM and firmware versions use the older SCCP version.
But our Firewall (Juniper SSG) use a ALG Service and it don't support the SCCP version 17.
We used the command unset alg sccp enable and now, all the phones are registered on the CUCM.

Thank you for your help.

I hope that you will find a solution for your issue.

Best Regards,

Guillaume

[Razmir Masri Abdul Razak]

Guillaume,

Glad to hear that. It's been two month already I have been facing this problem. I just email my ISP and pointed out to them about this problem and I hope I can solve this issue before end of this week.

Looks like we have the solution already yay!!..

Please rate my post

Thanks

[blakebristow]

My guess is 8.2(2) of ASA doesnt support version 17 either a code upgrade fixed that as well.

[yavuzsab]

Hi All,  We have the exact same problem right for my client and don't have a solution yet???? we are working closely with the security team to isolate firewall issues.  I notice following in the phone logs.  [01-01]01:32:03.584|sccp |3|00|getSoftwareVersion: appMajor=1 appMinor=4 brMajor=3 brMinor=0 [01-01]01:32:04.341|sccp |3|00|getSoftwareVersion: appMajor=1 appMinor=4 brMajor=3 brMinor=0 [01-01]01:32:04.584|sccp |3|00|getSoftwareVersion: appMajor=1 appMinor=4 brMajor=3 brMinor=0 [01-01]01:32:28.097|sccp |3|00|registrationEvent_StationRegistration: 1137 cm0 WAIT_SRST_INTERROGATE(TIMEOUT) [01-01]01:32:28.097|sccp |3|00|-----sending StationUnregisterMessage index 0  [01-01]01:32:28.097|sccp |3|00|stopKeepAlive_StationKeepAlive 0 [01-01]01:32:28.098|sccp |4|00|stopSocketMonitor_SocketMonitor: 0 [01-01]01:32:28.098|sccp |3|00|closeSocket_SkinnyContext: index=0 hMtx=960000 socket=415e80a4 [01-01]01:32:28.098|sccp |4|00|stopSocketMonitor_SocketMonitor: completed [01-01]01:32:28.099|sccp |3|00|registrationEvent_StationRegistration: cm0 REG_STATE_WAIT_SRST_INTERROGATE=>REG_STATE_IDLE [01-01]01:32:28.099|sccp |3|00|runRegistrationManager: registrationFailed_RegManagerMsgID cm[0] param2=4 [01-01]01:32:28.099|sccp |3|00|registrationEvent_RegistrationManager: NOT_REGISTERED(EVENT_REG_FAILED) param1=0 param2=4  Thanks, Yav

[yavuzsab]

its resolved now. Juniper firewall was the cause.

[whenusayloveme]

Dear Yavuzsab,

     I found the same problem like you, how did you solve it? Please.

Winai