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<DIV><FONT face="Courier New" color=#000000 size=2>No way iLBC can be used
between 7941 and 7942 in the same cluster when region BW is set to 24 kbps - CCM
has visibility of both IP phones and knows they have common G.729
codec.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Gateway does not have common
G.729 codec with 794x.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Rgds</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Alex</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=akoul@dataways.gr href="mailto:akoul@dataways.gr">Anthony
Kouloglou</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ecralar@hotmail.com
href="mailto:ecralar@hotmail.com">Alex</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=cisco-voip@puck.nether.net
href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, December 02, 2008 7:26
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [cisco-voip] g729 is used
instead of iLBC</DIV>
<DIV><BR></DIV><FONT face="Times New Roman">Hi Alex,<BR>during call setup,
7942 shows ilbc and 7941 shows g711 as codecs.<BR>As soon as someone picks up
the phone the conversation is in g729.<BR>So, there is no way to talk in ilbc
between 2 regions even if a have transcoders?<BR>But that why a transcoder is
needed; to join 2 devices that cannot support the same codecs.<BR>And why does
the voice gateway uses the
transcoder?<BR><BR>Thanks<BR>Anthony<BR></FONT><BR>Alex wrote:
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<DIV><FONT face="Courier New" color=#000000 size=2>I'll give it a
stab.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Device A/7941 and Device
B/7942 share 2 common codecs: G.711 and G.729a.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Your region config as
described below allows iLBC as MAX codec BW (max BW per call == 24
kbps, see <A
href="http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/6_0_1/ccmcfg/b02regio.html#wp1055534"
moz-do-not-send="true">http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/6_0_1/ccmcfg/b02regio.html#wp1055534</A>)</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>The transcoder does not
get invoked between 2 IP phones in the same cluster if they share a
common codec.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>As to why iLBC shows in
call stats, I have no idea - it should not as 7941 does not support
iLBC.</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Rgds</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Alex</FONT></DIV>
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<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal">-----
Original Message ----- </DIV>
<DIV
style="BACKGROUND: rgb(228,228,228) 0% 50%; FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial"><B>From:</B>
<A title=akoul@dataways.gr href="mailto:akoul@dataways.gr"
moz-do-not-send="true">Anthony Kouloglou</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>To:</B>
<A title=burns.jason@gmail.com href="mailto:burns.jason@gmail.com"
moz-do-not-send="true">Jason Burns</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>Cc:</B>
<A title=cisco-voip@puck.nether.net
href="mailto:cisco-voip@puck.nether.net"
moz-do-not-send="true">cisco-voip@puck.nether.net</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>Sent:</B>
Monday, December 01, 2008 2:53 PM</DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal"><B>Subject:</B>
[cisco-voip] g729 is used instead of iLBC</DIV>
<DIV><BR></DIV><FONT face="Times New Roman">Hi all,<BR>i really can't
understand this behavior:<BR><BR></FONT><FONT face="Times New Roman">Phone
A (7941) is in device pool A which has region A. <BR>Registered IOS
Enhanced Transcoder has device pool A and is configured for iLBC.(It is
physically located at site A)<BR><FONT color=#cc0000>There is no media
resource group or list configured in all the cluster.</FONT> So all the
resources are shared equally upon request i guess.<BR><BR>Phone B (7942)
is in device pool B which has region B. (another siteB)<BR><FONT
color=#cc0000>Region A<-> Region B has iLBC
configured.</FONT><BR>Hub_none location is configured in device_pool
A.<BR>Location B has 80kbps configured and is lossy configured
versus hub_none.<BR>Location B is in device pool B<BR><BR>Phone A can talk
with phone B whoever calls the other.<BR>When A calls B or B calls A
before the other answers the call, ilbc is shown in call
statistics.<BR><FONT color=#cc0000>When the call setup is finished and
they talk, the codec on both ends is g729!</FONT>!! I have nowhere
configured g729 in any region!! how is this possible?<BR>Also, phone B
calls through the voice gateway in site A and through PSTN. The codec from
phone B to router is iLBC!!<BR>Also, phone B calls a trunk configured in
site A and listens to voice-mail. The call is also iLBC!<BR>Voice
gateway/trunk has the same settings as the phone A (that is: a device pool
A and MRGL none.<BR></FONT><FONT face="Times New Roman">So i guess, the
transcoder is working fine.<BR><BR>What am i missing?<BR>Why can't the two
phones talk in ilbc? 7941 can't use the transcoder which is in the same
site?<BR><BR>Thanks<BR>Anthony<BR></FONT><BR><BR>
<P></P>
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