[cisco-voip] cant dial out from ip phone

[Chad Whitten]

turns out, this is actually a bug in callmanager.  the ip phones lose their 
calling search space after a reset.

looks like i will be rebooting the callmanager servers

for anyone who is interested, here is the bug #
 	CSCea20477 Bug Details

Release Notes
 
Symptoms:
IP phone registered to a CCM server loses ability to call other phones
or out to the PSTN after the phone is reset. Once the condition starts
occurring, any additional phone that is reset is likely to experience the same
failure. CCM trace shows that the CallManager is no longer honoring the
Calling Search Space(CSS) configured for the IP phone.

example from CCM trace:
Cisco CallManager|Digit analysis: match(fqcn="4003", cn="4003", pss="", 
dd="9")

This snippet of CCM trace shows an attempted call from x4003. The pss should
be a list of valid partitions to be searched for the dialed destination (dd).
The pss shows no valid partitions even though in CCMAdmin both the phone 
device
and the phone line are configured with CSS containing several partitions

Conditions:
CallManager in a cluster of 2 or more servers. This is due to a
handle leak in the CCM.exe process. Open task manager on the callmanager
server, select the process tab, select view, then select columns, check the 
box
for handle count, select OK. Find the CCM.exe process and the assocaited
handle count. On most systems the handle count for CCM.exe should be less
than 10,000. The handle count is dependant on the system configuration and
registered devices, so it is best to benchmark a system handle count
immediately after a restart and then monitor for upward trends. Handle counts
can also be monitored and recorded through performance monitor
start->programs->administrative tools->performance for easier recording and
trending.

Issue introduced in CCM 3.2(2c)spG and resolved in 3.2(2c)spH
Issue introduced in CCM 3.2(2c)ES39 and resolved in 3.2(2c)ES63

Workaround:
Register the IP phones to a backup server OR reboot the affected call
processing server. Then upgrade CCM to a fixed version for a long term fix.

On Wednesday 20 October 2004 08:59, Lelio Fulgenzi wrote:
> This certainly sounds serious. The best would be to start looking at the
> trace files, I know it might take a few minutes but that is your best bet.
> The trace will show you the results of the dialed numbers and whether or
> not the calling search spaces are still valid.
>
> A call to the TAC might be in order as well.
>   ----- Original Message -----
>   From: Chad Whitten
>   To: cisco-voip at puck.nether.net
>   Sent: Wednesday, October 20, 2004 9:54 AM
>   Subject: Re: [cisco-voip] cant dial out from ip phone
>
>
>   apparently this is worse than i had feared, turns out, once a phone
> reboots, it cant dial out, no matter what partition its in.
>
>   On Wednesday 20 October 2004 08:45, Chad Whitten wrote:
>   > i came in this morning and found that all phones in one partition could
>   > not place outbound calls (to the pstn and to other ip phones within the
>   > same partition or other partitions).  I get a fast busy as soon as I
>   > hit any key.
>   >
>   > I moved my phone to this partition in question and observed the same
>   > behavior. then, I tried moving my phone back to its normal partition
>   > and I still could not place outbound calls, but other phones in that
>   > partition could.  I then just replaced the phone with another (7940)
>   > and still had the same problem.
>   >
>   > Inbound calls work fine (both from the pstn and from an ip phone), the
>   > phone is registered with the callmanager.
>   >
>   > I tried just deleting the phone and readding it.  changing the line
>   > number, etc.  nothing works.
>
>   --
>   Chad Whitten
>   Network Administrator
>   neXband Communications
>   cwhitten at nexband.com
>   601-944-4801 Phone
>   601-944-4803 Fax
>
>   _______________________________________________
>   cisco-voip mailing list
>   cisco-voip at puck.nether.net
>   https://puck.nether.net/mailman/listinfo/cisco-voip

-- 
Chad Whitten
Network Administrator
neXband Communications
cwhitten at nexband.com
601-944-4801 Phone
601-944-4803 Fax