[cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)
Darren Smith
darren at silvercommunities.com.au
Wed May 3 03:50:17 EDT 2006
Hi,
At the moment, we only have 2 PRI's connecting to this gateway, i'll
have to check next time this happens what PRI the call is on.
Darren
________________________________
From: Fedorov, Konstantin [mailto:kfedor at amt.ru]
Sent: Wednesday, 3 May 2006 5:47 PM
To: Darren Smith; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)
Hi,
Well, the phone is fine.
This is interesting. So user claim that at the second call everything
ok/
Do you have any load balancing ? I mean that second call can leave voip
at the different gw or
At the same gw but on different T1/E1 ??
What display sh call history voice br at the problem call ??
-----------------------
Sincerely Yours,
Konstantin Fedorov
________________________________
From: Darren Smith [mailto:darren at silvercommunities.com.au]
Sent: Wednesday, May 03, 2006 11:22 AM
To: Fedorov, Konstantin; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)
Hi,
To answer your questions:
1 - The user hears themselves twice, but the the remote user cannot hear
anything unusual.
2 - The echo does not occur on "on net" calls, only when they pass to
the PSTN, and then on local, national and mobile calls. (Both inbound
and outbound). The gateway is a Cisco AS5350.
3 - No, between IP phones on our network is fine. When the user
experiences this, they say that the next call is ok, no echo.,
Thanks
Darren
________________________________
From: Fedorov, Konstantin [mailto:kfedor at amt.ru]
Sent: Wednesday, 3 May 2006 5:17 PM
To: Darren Smith; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)
Hi,
To answer you question, you must understand where is the source of Echo.
And what kind of Echo you have.
1. Does you users hear yourselves or twice remote user ??
2. When echo appears ? Where the user call - long distance call or
local ??
Does a call exist the VoIP ?? if yes, what is the gateway
3. Is Echo between two IP phones ??
When you replace phone, the problem with the same holder of phone, does
it ?
Here the link where you could find useful info.
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a
0080149a1f.shtml
-----------------------
Sincerely Yours,
Konstantin Fedorov
________________________________
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Darren Smith
Sent: Wednesday, May 03, 2006 6:02 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)
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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________________________________
DISCLAIMER: This email, together with any attachments, is intended for
the named recipient(s) only; and may contain privileged and confidential
information. If received in error, you are asked to inform the sender as
quickly as possible and delete this email and any copies of this from
your computer system network. If not an intended recipient of this
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on it; any form of disclosure, modification, distribution and /or
publication of this email is also prohibited. Unless stated otherwise,
this email represents only the views of the sender and not the views of
Silver Communities Pty Ltd.
DISCLAIMER: This email, together with any attachments, is intended for the named recipient(s) only; and may contain privileged and confidential information. If received in error, you are asked to inform the sender as quickly as possible and delete this email and any copies of this from your computer system network. If not an intended recipient of this email, you must not copy, distribute or take any action(s) that relies on it; any form of disclosure, modification, distribution and /or publication of this email is also prohibited. Unless stated otherwise, this email represents only the views of the sender and not the views of Silver Communities Pty Ltd.
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