cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
806
Views
0
Helpful
6
Replies

WS-C2960-48PST-L & Cisco 8851 Issue

cmvictoria
Level 1
Level 1

So I'm having issues with a Cisco IP Phone 8851 that's connected to a WS-C2960-48PST-L. It powers up and registers. However, it's unable to make or receive calls. Is there a compatibility issue with this model phone and switch? I also have 2960X switches in my environment that work fine with 8851s.

 

 

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C2960-48PST-L 15.0(2)SE C2960-LANBASEK9-M

 

switch#show run int f0/13
Building configuration...

Current configuration : 156 bytes
!
interface FastEthernet0/13
switchport voice vlan 3
logging event link-status
mls qos trust dscp
no snmp trap link-status
spanning-tree portfast
end

 

switch#show mac add | i 893e
1 0027.902a.893e DYNAMIC Fa0/13
3 0027.902a.893e DYNAMIC Fa0/13

 

switch#show power inline
Available:370.0(w) Used:167.1(w) Remaining:202.9(w)

Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/13 auto on 9.4 IP Phone 8851 4 15.4

6 Replies 6

Leo Laohoo
Hall of Fame
Hall of Fame
Switch is running an early version of 15.0(2)SE train. I strongly recommend upgrading to the latest version of the 15.0(2)SE train and see if makes any difference.

if the phone registers to the call manager, I suggest to check there why the phone cannot initiate or receive calls.

it may have a CSS where only calls to local numbers or maybe even only to the operator are alowed!

as this is a SIP phone you may need additional configuration to call SCCP phones ?

or this:  The Cisco IP Phone 8851 requires an Enhanced User Connect License (UCL) in order to connect to Cisco Unified Communications Manager.

This is not the case.

So how many phones are having this issue?
What CUCM version are you running?

CUCM Version - 11.5.1.13900-52

There are a few 8851s that are affected by this issue. It's just at this one site. They register just fine, but cannot call out or receive calls.

I've updated the switch to the latest and greatest code. No luck.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: