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Beginner

Moving IP phone to new physcial location does NOT work

I have a non-Cisco ip phone that works.  After making three more new wall ports Hot with POE and VOIP, I moved the working ip phone to one of the three new switch ports.  The phone powers up and displays a crc error.  The Cisco 2960S port goes green, but the phone does not work.

This is a non-Cisco PBX with proprietary DHCP...

Any ideas?

3 REPLIES 3
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Participant

Possibly cabling issue.

Try this command

=test cable tdr int

And then show cable tdr int

From the out put see if pair c is normal or open. If its open the possible a cabling issue.

It suppose to be normal.

Please rate if this helps

thanks

Highlighted

I get the above symptom plugging directly into the 2960S switch.

The port where i plugged into the phone was configured like this:

switchport trunk allowed vlan 1,2

switchport mode trunk

switchport nonegotiate

priority-queue out

mls qos trust cos

spanning-tree portfast trunk

spanning-tree bpduguard enable

switchport trunk allowed vlan 1,2

switchport mode trunk

switchport nonegotiate

priority-queue out

mls qos trust cos

I then changed it to the below, thinking that the portfast or bpduguard could interrupt the phone registration??

switchport trunk allowed vlan 1,2
switchport mode trunk
switchport nonegotiate
priority-queue out
mls qos trust cos

Any thoughts?

Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 05-May-11 16:56 by prod_rel_team
Image text-base: 0x00003000, data-base: 0x01B00000

ROM: Bootstrap program is Alpha board boot loader
BOOTLDR: C2960S Boot Loader (C2960S-HBOOT-M) Version 12.2(53r)SE, RELEASE SOFTWARE (fc3)

GVS12SW06GBPOE uptime is 15 weeks, 5 days, 1 hour, 33 minutes
System returned to ROM by power-on
System restarted at 06:56:07 cst Fri Jun 8 2012
System image file is "flash:/c2960s-universalk9-mz.122-55.SE3/c2960s-universalk9-mz.122-55.SE3.bin"

Highlighted

try this

switchport trunk native vlan XXX (your data vlan)

switchport trunk allowed vlan XXX,XXX

switchport mode trunk

switchport voice vlan XXX (your voice vlan)

srr-queue bandwidth share 1 30 35 5

priority-queue out

mls qos trust device cisco-phone

mls qos trust cos

auto qos voip cisco-phone

spanning-tree portfast

spanning-tree bpduguard enable

service-policy input AUTOQOS-SRND4-CISCOPHONE-POLICY

hope this will help.

thanks

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