[cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)

[Darren Smith]

Hi,

I have 2 users complaining of feedback / Echo on 2 Cisco 7940 phones.
The phones are connected to a Cisco Catalyst 3524XL-PWR switch, along
with 20 other 7940's.
No other users on this switch are experiencing any issues.

I have replaced one of the phones, but the issue is still there.

The switch is running IOS ver c3500xl-c3h2s-mz.120-5.WC03, I noticed the
latest version is c3500xl-c3h2s-mz.120-5.WC14 which I can only upgrade
to out of hours.

Is there anything else I can check to resolve this issue?
Switch Config is pasted below:

Thanks

Darren Smith
------------------------------------------------------------------------
-------------

Current configuration:
!
! Last configuration change at 16:53:06 Brisban Tue May 2 2006
! NVRAM config last updated at 08:35:28 Brisban Wed May 3 2006
!
version 12.0
no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime localtime show-timezone
no service password-encryption
!
hostname goldcoast-sw-3524-5
!
aaa new-model
aaa authentication login default enable
aaa authorization exec default if-authenticated
enable secret 5 ***********************
!
username silver privilege 15 password 0 **************
!
!
!
!
clock timezone Brisbane 10
!
ip subnet-zero
!
!
!
interface FastEthernet0/1
 description Apartment 27
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 127
 switchport trunk allowed vlan 1,3,127,1002-1005
 switchport mode trunk
 switchport voice vlan 3
 switchport priority extend cos 0
 spanning-tree portfast
!
interface FastEthernet0/2
 description Apartment 39
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 139
 switchport trunk allowed vlan 1,3,139,1002-1005
 switchport mode trunk
 switchport voice vlan 3
 switchport priority extend cos 0
 spanning-tree portfast
!
!
interface FastEthernet0/12
 description Apartment 44
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 144
 switchport trunk allowed vlan 1,3,144,1002-1005
 switchport mode trunk
 switchport voice vlan 3
 switchport priority extend cos 0
 spanning-tree portfast
!
interface FastEthernet0/13
 description Apartment 33
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 133
 switchport trunk allowed vlan 1,3,133,1002-1005
 switchport mode trunk
 switchport voice vlan 3
 switchport priority extend cos 0
 spanning-tree portfast
!
interface FastEthernet0/14
 duplex half
 speed 10
 switchport access vlan 3
 switchport trunk allowed vlan 1,3,1002-1005
 spanning-tree portfast
!
interface FastEthernet0/15
 description Apartment 34
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 134
 switchport trunk allowed vlan 1,3,134,1002-1005
 switchport mode trunk
 switchport voice vlan 3
 switchport priority extend cos 0
 spanning-tree portfast
!
interface FastEthernet0/16
 switchport access vlan 3
 switchport trunk allowed vlan 1,3,1002-1005
 switchport voice vlan 3
 spanning-tree portfast
switchport priority extend cos 0
!
!
interface GigabitEthernet0/1
 duplex full
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,3,98,127-144,1002-1005
 switchport mode trunk
!
interface GigabitEthernet0/2
 shutdown
 switchport trunk allowed vlan 1,1002-1005
!
interface VLAN1
 ip address 10.3.15.103 255.255.255.0
 no ip directed-broadcast
 no ip route-cache
 shutdown
!
interface VLAN98
 ip address 172.16.3.46 255.255.255.224
 no ip directed-broadcast
 no ip route-cache
!
ip default-gateway 172.16.3.33
!
line con 0
 transport input none
 stopbits 1
line vty 0 4
 privilege level 15
line vty 5
 privilege level 15
line vty 6 15
!
ntp clock-period 11259183
ntp server 172.16.9.1
ntp server 172.16.9.2
end

goldcoast-sw-3524-5#


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