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

Wed May 3 04:06:47 EDT 2006

Hi?

Ok,  is this two different providers or the same ??

Can you send a sh dial-peer voice sum ??

-----------------------
Sincerely Yours,
Konstantin Fedorov

  _____  

From: Darren Smith [mailto:darren at silvercommunities.com.au] 
Sent: Wednesday, May 03, 2006 11:50 AM
To: Fedorov, Konstantin; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Echo / Feedback on 7940 and CCM 4.1(3)

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_note09186a0080149a1f.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 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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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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