asterisk users - Apr 2005 - Gabled voice problem on Asterisk for two remote users

Greetings:

Can anyone point me in the redirection in troubleshooting a problem of 
garbled voice  audio
that three of my remote client on our Asterisk network are having.

We have the following configuration:  I have two remote asterisk clients 
going through a cisco routet to our
external Asterisk sever ( show version Asterisk CVS-10/22/03).  The 
external server forward the remote client's
call to our internal Asterisk server9mirrors*CLI> show version Asterisk 
CVS-v1-0-10/14/04-).  (the reason for this setup is due to Asterisk not 
being able go directly though NAT) The internal server then routes the 
call to the appropriate people.   Another point, the two remote clients 
are able to communicate with each other without any problems.

Please advise me the best way to troubleshoot this problem or please let 
me know if you need any additional information.

Thanks,

Don

Hi friends !

Can anybody help me to configure asterisk with ser so that I can share
the load of the asterisk with ser server. I have tried it but my
asterisk is not showing registrations of the user agent, as given in the
asterisk wiki/asterisk+at+large. I don't know what is the problem, but
can assure abt the ser that is is running well and also forwarding
packets to asterisk server but * is not getting these packets. Can
anybody tell me that what`s wrong with my Asterisk server? Do I need to
change /add something in sip.conf? Please help me .

Regards,

Deepak Dhiman