extensions go offline for no reason UC560

inventica · ‎09-27-2011

Hello!

We made a few changes in our UC560 config related to dial peers and DIDs and since then, we are having a strange problem: four extensions go offline every 12-24 hours.

Here is what happens:

On 26 Sep at 20:47 I reboot one of our CP-521S phones, extension 111, before going home

2011-09-26 20:47:34 Local7.Info 192.168.10.4 460: 000468: Sep 26 19:47:47.263: %IPPHONE-6-REG_ALARM: Name=SEP00211BFCB2B3 Load=8.1.17 Last=Hard+Unknown

2011-09-26 20:47:34 Local7.Info 192.168.10.4 461: 000469: Sep 26 19:47:47.459: %IPPHONE-6-UNREGISTER_ABNORMAL: ephone-33:SEP00211BFCB2B3 IP:10.1.1.23 Socket:5 DeviceType:Phone has unregistered abnormally.

2011-09-26 20:47:34 Local7.Info 192.168.10.4 462: 000470: Sep 26 19:47:47.459: %IPPHONE-6-REGISTER: ephone-33:SEP00211BFCB2B3 IP:10.1.1.23 Socket:1 DeviceType:Phone has registered.

I check the phone - it works, there is a dial tone

On 27 Sep at 10:00 I come to work and the phone is dead, no dial tone. I ping then phone and it pings okay, I can connect connect to it over HTTP (see attached), but cannot make or receive calls. All calls go to voicemail.

I logon to our syslog server and see this:

2011-09-27 07:27:16 Local7.Info 192.168.10.4 305: 000302: *Sep 27 06:23:39.465: %IPPHONE-6-REG_ALARM: Name=SEP00211BFCB2B3 Load=8.1.17 Last=Hard+Unknown

2011-09-27 07:27:16 Local7.Info 192.168.10.4 319: 000316: *Sep 27 06:23:39.685: %IPPHONE-6-REGISTER: ephone-33:SEP00211BFCB2B3 IP:10.1.1.23 Socket:5 DeviceType:Phone has registered.

2011-09-27 07:27:16 Local7.Info 192.168.10.4 320: 000317: *Sep 27 06:23:39.709: %IPPHONE-6-REG_ALARM: Name=SEP00211BFCB2B3 Load=8.1.17 Last=Hard+Unknown

I have four phones with this problem. They have been all working okay for more than a year. I tried connecting phones to another port on the switch, changing phone sets etc - doesn't seem to make any difference. The problem is somehow related with extensions but I'm not sure how to troubleshoot it and would appreaiate any help.

craig.corbett · ‎09-27-2011

Hey, had some weird issues a while back similar to this. To start check the firmware on the switches update to latest and see how you get on is what I would recommend to start with. Afterwards check the firmware on the phones.

HTH

Craig.

inventica · ‎10-05-2011

I have found something interesting, hopefully that will shed more light on this problem. Firmware is not the problem.

It appears that this problem has somethign to do with hunt groups. all phones in hunt group 1 experience this problem. so if I add a working phone to hunt group 1 - next day it will crash. here is my config

ephone-dn 18 dual-line

number 104 no-reg primary

pickup-group 1

label 104

description RECEPTION

name RECEPTION

call-forward night-service 514

call-forward noan 121 timeout 30

night-service bell

!

voice hunt-group 1 parallel

final 512

list 108,104,105,106,100

timeout 10

pilot 511

!

voice hunt-group 2 parallel

list 114,107,102,103,104

timeout 100

pilot 512

!

voice hunt-group 3 parallel

final 511

list 101,109,117

timeout 10

pilot 513

!

voice hunt-group 4 parallel

list 251,253,254,259

timeout 100

pilot 514

all phones in group 1 except 104 for some bizzare reason go offline every day in the morning. I can add any new phone to this group and it will crash too. If I remove a phone from that group - it always works.

I'm not even sure what's wrong with that hunt group.

Darren DeCroock · ‎10-05-2011

Hello,

I am not sure exactly what is going on with those phones, but because of the timing you mentioned... 12/24 hours. It almost sounds like a DHCP issue, where the phones are not able to renew their IP addresses. You could test this by changing the lease time for DHCP addresses, to see if that is the case.

(I know that you said you can still ping the phone, and access the web interface, but because of the timing, DHCP is the only thing I can think of at this time.)

DHCP least time can be changed in CCA by modifying the DHCP pool. Lease time is listed there.

You can also use CLI to modify: conf t - ip dhcp pool phone - lease infinite.

Thank you,

Darren

inventica · ‎10-05-2011

Hello Darren

DHCP is not a problem. all phones have IPs, I can ping them and connect via HTTP, so they are connected to the phone system, I can see that runnign show ephone, but there is no dial tone. I can't make or receive calls. If somebody calls me, calls go to voicemail

If that was a DHCP issue, it would presumably affect all phoens regardless what hunt group they are in, whereas in my case I can add a working phone to group 1 and it will have this problem the next day

David Trad · ‎10-05-2011

Hi Inventica,

What Software Pack are you currently running?

Cheers,

David.

Cheers, David Trad. **When you rate a persons post, you are indicating a thank you or that it helped, but at the same time you are also helping to maintain the community spirit - You don't have to rate posts and you wont be looked down upon :) *

inventica · ‎10-06-2011

I'm running 8.0.2.

I did a few tests yesterday

If I switch the phone system to night mode and have the following settings in my config:

ephone-dn 18 dual-line

number 104 no-reg primary

pickup-group 1

label 104

description RECEPTION

name RECEPTION

call-forward night-service 514

call-forward noan 121 timeout 30

night-service bell

voice hunt-group 1 parallel

final 512

list 108,104,105,106,100

timeout 10

pilot 511

voice hunt-group 4 parallel

list 251,253,254,259

timeout 100

pilot 514

Then as soon as I ring our main office number, all phones in hunt group 1, except 104 (Reception) - will die.

If I change

call-forward night-service 514

to, let's say an external phone number i.e. my mobile - everything works

call-forward night-service 07712345678