<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2523" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2>Hello.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>I have a Cisco IP
Phone 7940 connected to Cisco CallManager. </FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>I have a Cisco 2600
Router running H.323 Gatekeeper</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>I have Asterisk
server running OpenH323 that registers to this Gatekeeper.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>I have a Cisco
CallManager that registers to this Gatekeeper.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>The problems I face
are:</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004> <FONT face=Arial
size=2>1. Calling from Cisco IP Phone to Asterisk.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004>
-- Executing Dial("H323/ip$10.169.208.3:4791/194",
"IAX2/4555564| 20| r") in new
stack<BR> --
Called
4555564<BR> --
Call accepted by 82.221.53.53 (format
ULAW)<BR> --
Format for call is
ULAW<BR> --
IAX2/4555564/1 is
ringing<BR> --
Nobody picked up in 20000
ms<BR> --
Hungup
'IAX2/4555564/1'<BR>
-- Executing VoiceMail("H323/ip$10.169.208.3:4791/194", "u4555564") in new
stack</SPAN></DIV>
<DIV><SPAN class=622060309-04112004> </SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
If I answer this call with IAX Phone on my Windows Desktop then audio is not
transcoded in Asterisk between codecs. </SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
I can see that both phones are sending Asterisk udp packets but no packets are
sent from Asterisk to neither phones. </SPAN></DIV>
<DIV><SPAN
class=622060309-04112004> Is
there not supposed to be a transcoder in Asterisk to transcode GSM <->
uLaw ?</SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
If I don't pick up the call the VoiceMail answers. I can't hear anything
in my Cisco Phone when voicemail answers. </SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
If I dial VoiceMailMain I will not hear anything in my Cisco IP Phone
either.</SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004> <FONT face=Arial
size=2>2. Calling from Asterisk to Cisco IP Phone.</FONT></SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
exten => _45570XX,1,Dial(H323/${EXTEN}) ; With Gatekeeper this should be
the Dial Command, right
?<BR> exten
=> _45570XX,2,Hangup</SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN
class=622060309-04112004>
-- Executing Dial("<A
href="mailto:IAX2/4555564@4555564/2">IAX2/4555564@4555564/2</A>",
"H323/4557040") in new
stack<BR>
Nov 4 09:40:28 NOTICE[360469]: chan_h323.c:464 oh323_call: h323_make_call
failed(H323/4557040)<BR>
-- Couldn't call
4557040<BR>
== Everyone is busy/congested at this
time<BR>
-- Executing Hangup("<A
href="mailto:IAX2/4555564@4555564/2">IAX2/4555564@4555564/2</A>", "") in new
stack<BR>
== Spawn extension (default, 4557040, 2) exited non-zero on <A
href="mailto:'IAX2/4555564@4555564/2'">'IAX2/4555564@4555564/2'</A><BR>
-- Hungup <A
href="mailto:'IAX2/4555564@4555564/2'">'IAX2/4555564@4555564/2'</A><BR></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>
3. Asterisk does not answer all h.323 calls.</FONT></SPAN></DIV>
<DIV><SPAN
class=622060309-04112004>
<FONT face=Arial size=2>tcpdump of CallManager (10.169.208.3) calling Asterisk
(10.169.208.11) but Asterisk is not answering. </FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2> no
entries found í Asterisk log or console to explain why the call is not
answered.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2>
09:50:03.501931 10.169.208.11.h323hostcall > 10.169.208.3.1301: P 179:225(46)
ack 232 win 6432
(DF)<BR>
09:50:03.502074 10.169.208.3.1301 > 10.169.208.11.h323hostcall: R
1926726275:1926726275(0) win 0 [tos
0x68] <BR>
09:50:03.502863 10.169.208.11.h323hostcall > 10.169.208.3.1301: R 225:225(0)
ack 232 win 6432
(DF)<BR>
09:50:04.275719 arp who-has 10.169.208.3 tell
10.169.212.64<BR>
09:50:04.298929 10.169.208.3.xtel > 10.169.208.11.h323hostcall: S
1930294417:1930294417(0) win 65535 <mss 1460,nop,nop,sackOK> [tos
0x68] <BR>
09:50:04.298947 10.169.208.11.h323hostcall > 10.169.208.3.xtel: S
2316371676:2316371676(0) ack 1930294418 win 5840
<mss 1460,nop,nop,sackOK>
(DF)<BR>
09:50:04.299044 10.169.208.3.xtel > 10.169.208.11.h323hostcall: . ack 1 win
65535 [tos
0x68] <BR>
09:50:04.301532 10.169.208.3.xtel > 10.169.208.11.h323hostcall: P 1:182(181)
ack 1 win 65535 [tos
0x68] <BR>
09:50:04.301559 10.169.208.11.h323hostcall > 10.169.208.3.xtel: . ack 182 win
6432 (DF)<BR>
09:50:04.304664 10.169.208.11.h323hostcall > 10.169.208.3.xtel: P 1:179(178)
ack 182 win 6432
(DF)<BR>
09:50:04.493788 10.169.208.3.xtel > 10.169.208.11.h323hostcall: . ack 179 win
65357 [tos
0x68] <BR>
09:50:06.986005 arp who-has 10.169.208.3 tell
10.169.212.39<BR>
09:50:08.048699 arp who-has 10.169.208.3 tell
10.169.212.34<BR>
09:50:11.604300 arp who-has 10.169.208.3 tell
10.169.212.69<BR>
09:50:16.342221 10.169.208.11.h323hostcall > 10.169.208.3.xtel: P 179:225(46)
ack 182 win 6432
(DF)<BR>
09:50:16.343182 10.169.208.11.h323hostcall > 10.169.208.3.xtel: F 225:225(0)
ack 182 win 6432
(DF)<BR>
09:50:16.343317 10.169.208.3.xtel > 10.169.208.11.h323hostcall: . ack 226 win
65311 [tos
0x68] <BR>
09:50:16.347658 10.169.208.3.xtel > 10.169.208.11.h323hostcall: F 182:182(0)
ack 226 win 65311 [tos
0x68] <BR>
09:50:16.347670 10.169.208.11.h323hostcall > 10.169.208.3.xtel: . ack 183 win
6432 (DF) [tos
0x68] <BR>
09:50:20.875796 arp who-has 10.169.212.98 tell
10.169.208.3<BR></FONT></SPAN><SPAN class=622060309-04112004></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>
4. Changing Asterisk configuration.</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004></SPAN><SPAN class=622060309-04112004><FONT
face=Arial
size=2> If I
change Asterisk configuration and execute the reload command no H.323
communication will work. </FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2> I am
forced to stop Asterisk service, clear the endpoint from the Gatekeeper and
restart Asterisk. </FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial
size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=622060309-04112004><FONT face=Arial size=2>Gunnar
Gestsson</FONT></SPAN></DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT
face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT face=Arial
size=2></FONT><FONT face=Arial size=2></FONT><BR></DIV></SPAN></BODY></HTML>