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<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2>Do you have this problem with any of your
local-to-the-CallManager gateways? If not, you could be running into
latency issues, or possibly older software on your gateways. This sounds
like one of several audio-cut through delay issues that used to
exist.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2>A few tests - </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2>1. Make a call from an IP Phone at your CallManager
site to the phone at the remote site - see if the call gets established and
shows as connected quickly. If things work here like they should, your
signalling path should be ok.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2>2. Make a call from the outside to that same phone,
and watch the amount of time from when you go offhook, to when the phone shows a
connected state. If no delay is present, you may have an audio cut-through
issue. If a delay is present, something may be interfering with control
traffic to the gateway, or quite possibly the VPN/IPSEC encryption process is
causing the delay. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=400443716-15112004><FONT face=Arial
color=#0000ff size=2>3. Kick the router into SRST mode and see if the same
problem exists (in other words, prevent any control traffic from crossing the
WAN). If it does, it may be an issue with the FXO cards, or the phone
lines themselves.</FONT></SPAN></DIV>
<DIV><BR> </DIV>
<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>Blomfield,
Adam<BR><B>Sent:</B> Monday, November 15, 2004 10:28 AM<BR><B>To:</B>
cisco-voip@puck.nether.net<BR><B>Subject:</B> [cisco-voip] Voice
Delay<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have several remote sales offices
that are connected to our CallManager cluster over internet VPN connections.
Most of the time they work fine; other than the occasional voice breakup that is
to be expected when running over a public network. One problem that seems to
come up is a delay in establishing the voice path. This happens at one office on
a very regular basis. The phone will ring and the user will pick up the
receiver, however it takes about 10 – 15 seconds for the voice path to be
established. They find themselves repeating “hello… hello?” into the handset
about three or four times before the other person can hear them. The seems to be
happening most frequently on external calls. The sites all have local PSTN
connections coming into FXO ports on a local 2600 series gateway. This is used
for both incoming and outgoing calls. I don’t see how where the latency is
occurring as the voice traffic never actually traverses the WAN. The call
control packets are obviously happening as the phone rings, and after that
everything should be local so there should be no delay. Does anyone have any
ideas?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><BR>Thanks,<BR>Adam<o:p></o:p></SPAN></FONT></P>
<P><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">_________________________________________<BR><BR><st1:PersonName
style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x"
tabIndex=0 w:st="on"><st2:GivenName w:st="on">Adam</st2:GivenName> <st2:Sn
w:st="on">Blomfield</st2:Sn></st1:PersonName><BR>WAN
Administrator<BR>Information Technology<BR>Sulzer Chemtech USA,
Inc.<BR>E</SPAN></FONT><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">-Mail </SPAN></FONT><A
href="mailto:adam.blomfield@sulzer.com"><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">mailto:adam.blomfield@sulzer.com</SPAN></FONT></A><SPAN
lang=DE><BR></SPAN><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">Internet </SPAN></FONT><A
href="http://www.sulzerchemtech.com/"><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">http://www.sulzerchemtech.com</SPAN></FONT></A><SPAN
lang=DE><BR></SPAN><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">_________________________________________</SPAN></FONT><SPAN
lang=DE><o:p></o:p></SPAN></P>
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style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV></BODY></HTML>