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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006>Have you taken a look at port statistics? Is
there lots of unnecessary traffic that may be interfering?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006>Also, Cisco puts a lot of push into their QoS.
The 3524's, by your configs, don't seem to offer a lot in the area of QoS when
compared to the 3550's and 3750's. Getting a switch that allows you
to run 'macro .. cisco-phone' for auto-configuring QoS goes a long way to making
a good sounding phone. </SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006>I found that the hard way when I forgot to set QoS
settings on a port connected to a Unity server. Without the proper
propogation and trust of QoS, Unity sounded pretty bad on the other side of WAN
link. When I set the proper port QoS, things improved.
</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=656111602-03052006>However, I'm just muttering about standard
things. Perhaps there is something else on your network that may be the
cause of this.</SPAN></FONT></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <B>On Behalf Of </B>Darren
Smith<BR><B>Sent:</B> Tuesday, May 02, 2006 23:02<BR><B>To:</B>
cisco-voip@puck.nether.net<BR><B>Subject:</B> [cisco-voip] Echo / Feedback on
7940 and CCM 4.1(3)<BR></FONT><BR></DIV>
<DIV></DIV><!-- Converted from text/rtf format -->
<P><FONT face=Arial size=2>Hi,</FONT> </P>
<P><FONT face=Arial size=2>I have 2 users complaining of feedback / Echo on 2
Cisco 7940 phones.</FONT> <BR><FONT face=Arial size=2>The phones are connected
to a Cisco Catalyst 3524XL-PWR switch, along with 20 other 7940's.</FONT>
<BR><FONT face=Arial size=2>No other users on this switch are experiencing any
issues.</FONT> </P>
<P><FONT face=Arial size=2>I have replaced one of the phones, but the issue is
still there.</FONT> </P>
<P><FONT face=Arial size=2>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.</FONT></P>
<P><FONT face=Arial size=2>Is there anything else I can check to resolve this
issue?</FONT> <BR><FONT face=Arial size=2>Switch Config is pasted below:</FONT>
</P>
<P><FONT face=Arial size=2>Thanks</FONT> </P>
<P><FONT face=Arial size=2>Darren Smith</FONT> <BR><FONT face=Arial
size=2>-------------------------------------------------------------------------------------</FONT>
</P>
<P><FONT face=Arial size=2>Current configuration:</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>! Last configuration change at
16:53:06 Brisban Tue May 2 2006</FONT> <BR><FONT face=Arial size=2>! NVRAM
config last updated at 08:35:28 Brisban Wed May 3 2006</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>version 12.0</FONT>
<BR><FONT face=Arial size=2>no service pad</FONT> <BR><FONT face=Arial
size=2>service timestamps debug datetime msec localtime</FONT> <BR><FONT
face=Arial size=2>service timestamps log datetime localtime show-timezone</FONT>
<BR><FONT face=Arial size=2>no service password-encryption</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>hostname
goldcoast-sw-3524-5</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT
face=Arial size=2>aaa new-model</FONT> <BR><FONT face=Arial size=2>aaa
authentication login default enable</FONT> <BR><FONT face=Arial size=2>aaa
authorization exec default if-authenticated</FONT> <BR><FONT face=Arial
size=2>enable secret 5 ***********************</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>username silver privilege 15
password 0 **************</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>clock timezone Brisbane
10</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>ip
subnet-zero</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial
size=2>interface FastEthernet0/1</FONT> <BR><FONT face=Arial
size=2> description Apartment 27</FONT> <BR><FONT face=Arial
size=2> switchport trunk encapsulation dot1q</FONT> <BR><FONT face=Arial
size=2> switchport trunk native vlan 127</FONT> <BR><FONT face=Arial
size=2> switchport trunk allowed vlan 1,3,127,1002-1005</FONT> <BR><FONT
face=Arial size=2> switchport mode trunk</FONT> <BR><FONT face=Arial
size=2> switchport voice vlan 3</FONT> <BR><FONT face=Arial
size=2> switchport priority extend cos 0</FONT> <BR><FONT face=Arial
size=2> spanning-tree portfast</FONT> <BR><FONT face=Arial size=2>!</FONT>
<BR><FONT face=Arial size=2>interface FastEthernet0/2</FONT> <BR><FONT
face=Arial size=2> description Apartment 39</FONT> <BR><FONT face=Arial
size=2> switchport trunk encapsulation dot1q</FONT> <BR><FONT face=Arial
size=2> switchport trunk native vlan 139</FONT> <BR><FONT face=Arial
size=2> switchport trunk allowed vlan 1,3,139,1002-1005</FONT> <BR><FONT
face=Arial size=2> switchport mode trunk</FONT> <BR><FONT face=Arial
size=2> switchport voice vlan 3</FONT> <BR><FONT face=Arial
size=2> switchport priority extend cos 0</FONT> <BR><FONT face=Arial
size=2> spanning-tree portfast</FONT> <BR><FONT face=Arial size=2>!</FONT>
<BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>interface
FastEthernet0/12</FONT> <BR><FONT face=Arial size=2> description Apartment
44</FONT> <BR><FONT face=Arial size=2> switchport trunk encapsulation
dot1q</FONT> <BR><FONT face=Arial size=2> switchport trunk native vlan
144</FONT> <BR><FONT face=Arial size=2> switchport trunk allowed vlan
1,3,144,1002-1005</FONT> <BR><FONT face=Arial size=2> switchport mode
trunk</FONT> <BR><FONT face=Arial size=2> switchport voice vlan 3</FONT>
<BR><FONT face=Arial size=2> switchport priority extend cos 0</FONT>
<BR><FONT face=Arial size=2> spanning-tree portfast</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>interface
FastEthernet0/13</FONT> <BR><FONT face=Arial size=2> description Apartment
33</FONT> <BR><FONT face=Arial size=2> switchport trunk encapsulation
dot1q</FONT> <BR><FONT face=Arial size=2> switchport trunk native vlan
133</FONT> <BR><FONT face=Arial size=2> switchport trunk allowed vlan
1,3,133,1002-1005</FONT> <BR><FONT face=Arial size=2> switchport mode
trunk</FONT> <BR><FONT face=Arial size=2> switchport voice vlan 3</FONT>
<BR><FONT face=Arial size=2> switchport priority extend cos 0</FONT>
<BR><FONT face=Arial size=2> spanning-tree portfast</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>interface
FastEthernet0/14</FONT> <BR><FONT face=Arial size=2> duplex half</FONT>
<BR><FONT face=Arial size=2> speed 10</FONT> <BR><FONT face=Arial
size=2> switchport access vlan 3</FONT> <BR><FONT face=Arial
size=2> switchport trunk allowed vlan 1,3,1002-1005</FONT> <BR><FONT
face=Arial size=2> spanning-tree portfast</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>interface FastEthernet0/15</FONT>
<BR><FONT face=Arial size=2> description Apartment 34</FONT> <BR><FONT
face=Arial size=2> switchport trunk encapsulation dot1q</FONT> <BR><FONT
face=Arial size=2> switchport trunk native vlan 134</FONT> <BR><FONT
face=Arial size=2> switchport trunk allowed vlan 1,3,134,1002-1005</FONT>
<BR><FONT face=Arial size=2> switchport mode trunk</FONT> <BR><FONT
face=Arial size=2> switchport voice vlan 3</FONT> <BR><FONT face=Arial
size=2> switchport priority extend cos 0</FONT> <BR><FONT face=Arial
size=2> spanning-tree portfast</FONT> <BR><FONT face=Arial size=2>!</FONT>
<BR><FONT face=Arial size=2>interface FastEthernet0/16</FONT> <BR><FONT
face=Arial size=2> switchport access vlan 3</FONT> <BR><FONT face=Arial
size=2> switchport trunk allowed vlan 1,3,1002-1005</FONT> <BR><FONT
face=Arial size=2> switchport voice vlan 3</FONT> <BR><FONT face=Arial
size=2> spanning-tree portfast</FONT> <BR><FONT face=Arial
size=2>switchport priority extend cos 0</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial
size=2>interface GigabitEthernet0/1</FONT> <BR><FONT face=Arial
size=2> duplex full</FONT> <BR><FONT face=Arial size=2> switchport
trunk encapsulation dot1q</FONT> <BR><FONT face=Arial size=2> switchport
trunk allowed vlan 1,3,98,127-144,1002-1005</FONT> <BR><FONT face=Arial
size=2> switchport mode trunk</FONT> <BR><FONT face=Arial size=2>!</FONT>
<BR><FONT face=Arial size=2>interface GigabitEthernet0/2</FONT> <BR><FONT
face=Arial size=2> shutdown</FONT> <BR><FONT face=Arial
size=2> switchport trunk allowed vlan 1,1002-1005</FONT> <BR><FONT
face=Arial size=2>!</FONT> <BR><FONT face=Arial size=2>interface VLAN1</FONT>
<BR><FONT face=Arial size=2> ip address 10.3.15.103 255.255.255.0</FONT>
<BR><FONT face=Arial size=2> no ip directed-broadcast</FONT> <BR><FONT
face=Arial size=2> no ip route-cache</FONT> <BR><FONT face=Arial
size=2> shutdown</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT
face=Arial size=2>interface VLAN98</FONT> <BR><FONT face=Arial size=2> ip
address 172.16.3.46 255.255.255.224</FONT> <BR><FONT face=Arial size=2> no
ip directed-broadcast</FONT> <BR><FONT face=Arial size=2> no ip
route-cache</FONT> <BR><FONT face=Arial size=2>!</FONT> <BR><FONT face=Arial
size=2>ip default-gateway 172.16.3.33</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>line con 0</FONT> <BR><FONT
face=Arial size=2> transport input none</FONT> <BR><FONT face=Arial
size=2> stopbits 1</FONT> <BR><FONT face=Arial size=2>line vty 0 4</FONT>
<BR><FONT face=Arial size=2> privilege level 15</FONT> <BR><FONT face=Arial
size=2>line vty 5</FONT> <BR><FONT face=Arial size=2> privilege level
15</FONT> <BR><FONT face=Arial size=2>line vty 6 15</FONT> <BR><FONT face=Arial
size=2>!</FONT> <BR><FONT face=Arial size=2>ntp clock-period 11259183</FONT>
<BR><FONT face=Arial size=2>ntp server 172.16.9.1</FONT> <BR><FONT face=Arial
size=2>ntp server 172.16.9.2</FONT> <BR><FONT face=Arial size=2>end</FONT> </P>
<P><FONT face=Arial size=2>goldcoast-sw-3524-5#</FONT> </P>
<DIV>
<P>
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