asterisk users - Apr 2006 - Asterisk to CCM4 SIP Trunk one-way audio problem.

Hello, ,
 
I have some of asterisk  to CCM4 SIP trunk oneway audio problems. 
 
I have setup a asterisk server. It's work great and have no any problems
connect to local ITSP (using SIP protocol) . But we need to build a sip
trunk to another CCM4 server.
 
The network typology like this.
 
SIP Phone (192.168.1.100) <-----------> 192.168.1.254 (Asterisk Server)
59.124. xx.xx <------------> [INERNET] <-------------> PIX firewall
<---------> CCM4
 
1.The CCM4 side user can call to my asterisk extension and work great. 
2.When I make a call from SIP phone to CCM4 extension. The CCM4 user can
pickup the call but he can't hear me. It's seems have an  one-way audio
problem.
 
The PIX firewall already mapping the TCP/UDP 5060 and UDP 16384-32768 to
CCM4 Server.
 
I have try to install another sip phone using public IP. It's same problems.
 
Anyone have any suggest on the settings? 
 
My sip.conf configuration:
[ccm4]
context=.............. 
canreinvite=no
host= the_ccm4_server_ip
nat=no
qualify=yes
type=peer
 
 
I have change a lot of settings. canreinvite=yes or no, nat=yes/no
qualify=yes/no. It's doesn't work.
 
Thank you for your help.
 
Best regards,
Kevin

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Have you tried turning off SIP fixup on the PIX?  On any version below 7.x it
should be

no fixup protocol sip 5060
no fixup protocol sip udp 5060

I've had all kinds of problems with PIX firewalls peeking inside of packets
(more with SCCP than SIP) and deciding not to open a port...

--JW

----- Original Message ----
From: kevin ling <kevin.ling@amphenol.com.tw>
To: Asterisk Users Mailing List - Non-Commercial Discussion
<asterisk-users@lists.digium.com>
Sent: Monday, April 10, 2006 4:12:39 AM
Subject: [Asterisk-Users] Asterisk to CCM4 SIP Trunk one-way audio problem.

    Hello, ,
  
 I have some of asterisk  to CCM4 SIP trunk oneway audio problems.  
  
 I have setup a asterisk server. It's work great and have no  any problems
connect to local ITSP (using SIP protocol) . But we need to  build a sip trunk
to another CCM4 server.
  
 The network typology like this.
  
 SIP Phone (192.168.1.100) <-----------> 192.168.1.254  (Asterisk Server)
59.124. xx.xx  <------------> [INERNET] <-------------> PIX firewall
<---------> CCM4
  
 1.The CCM4 side user can call to my asterisk extension and  work great. 
 2.When I make a call from SIP phone to CCM4 extension. The  CCM4 user can
pickup the call but he can't hear me. It's seems have an  one-way audio 
problem.
  
 The PIX firewall already mapping the TCP/UDP 5060 and UDP  16384-32768 to CCM4
Server.
  
 I have try to install another sip phone  using public IP. It's same
problems.
  
 Anyone have any suggest on the settings?  
  
 My sip.conf configuration:
 [ccm4]
 context=.............. 
 canreinvite=no
host= the_ccm4_server_ip
nat=no
qualify=yes
type=peer
  
  
 I have change a lot of settings. canreinvite=yes or no,  nat=yes/no
qualify=yes/no. It's doesn't work.
  
 Thank you for your help.
  
 Best regards,
 Kevin

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