[Asterisk-Users] PRI echo

[Matt Fredrickson]

On Sat, Sep 10, 2005 at 12:51:21AM -0700, Jason Kim wrote:
> My configuration is pri----*(te405p)---iaxclient.
> My * version is 1.0.7 running on tyan dual opteron
> board.
> I have several problems.

Upgrade! Upgrade! Upgrade!  At the very least, upgrade to
the last 1.0.x.  Even better would be to use the CVS-HEAD
or the latest 1.2beta release of libpri, zaptel, and asterisk.

There are new features that help TREMENDOUSLY with echo.  Try
the new echo canceller out (KB1, recently made default).  Your
bugs will probably go away, and your echo problems will likely
(at the very least) be improved.

> 
> 1) inbound echo
> For outbound call(iaxclient-->pri), there is almost no
> echo. But for inbound(pri-->iaxclient), I can hear
> distinct echo. Can Sangoma a104 or digium te406p help
> this problem? 
> 
> 2)Today i received te406p. I know T1/E1 jumper. But
> how can i change the configuration of te406p for echo
> cancel mode selection?
> 
> 3) asterisk crash
> (gdb) bt
> #0  0x0000002a973f15dd in q921_transmit_iframe
> (pri=0x2a9cd0ecf0, buf=0x40ffeac0, len=9, 
>     cr=1) at q921.c:384
> #1  0x0000002a973f701c in q931_xmit (pri=0x2a9cd0ecf0,
> h=0x40ffeac0, len=9, cr=1)
>     at q931.c:1848
> #2  0x0000002a973f720f in send_message
> (pri=0x2a9cd0ecf0, c=0x2a9cd12810, msgtype=77, 
>     ies=0x2a97500570) at q931.c:1888
> #3  0x0000002a973f7b31 in q931_release
> (pri=0x2a9cd0ecf0, c=0x2a9cd12810, cause=16)
>     at q931.c:2141
> #4  0x0000002a973f78eb in pri_disconnect_timeout
> (data=0x2a9cd12810) at q931.c:2092
> #5  0x0000002a973f309b in __pri_schedule_run
> (pri=0x2a95aa1da0, tv=0x40ffefa0)
>     at prisched.c:97
> #6  0x0000002a973f30f8 in pri_schedule_run
> (pri=0x2a95aa1da0) at prisched.c:109
> #7  0x0000002a9729e77a in pri_dchannel
> (vpri=0x2a9cd0ecf0) at chan_zap.c:7415
> #8  0x000000307f305f81 in start_thread () from
> /lib64/tls/libpthread.so.0
> #9  0x000000307e6c3af3 in thread_start () from
> /lib64/tls/libc.so.6
> #10 0x0000000000000000 in ?? ()
> 
> 4)chan_iax2
> Some times asterisk log file is filled with strange
> message as follow.
> Sep  8 13:36:41 NOTICE[4339]: I should never be
> called!
> Sep  8 13:36:41 NOTICE[4339]: I should never be
> called!
> And some times it's overloading my sata HDD and 
> disable ssh connection.
> 
> iax.conf
> -------------------------------------------------------
> [general]
> port=5036
> disallow=all
> tos=0x04
> qualify=no
> 
> [agent]
> type=friend
> username=agent
> secret=agent
> context=agent
> host=dynamic
> notransfer=yes
> callerid=20005000
> 
> zapata.conf
> -------------------------------------------------------
> [channels]
> context=default
> switchtype=euroisdn
> pridialplan=national
> prilocaldialplan=national
> nationalprefix=
> 
> signalling=pri_cpe
> usecallerid=yes
> hidecallerid=no
> callwaiting=yes
> callwaitingcallerid=yes
> callprogressdetect=yes
> threewaycalling=yes
> transfer=yes
> cancallforward=yes
> echocancel=yes
> echocancelwhenbridged=yes
> echotraining=800
> rxgain=2.0
> txgain=-4.0
> 
> group=1
> channel => 1-15
> channel => 17-31
> channel => 32-46
> channel => 48-62
> ------------------------------------------------------
> 
> Thanks, have a great holiday!
> 
> Regards,
> Jason
> 
> 
> 
> 	
> 		
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-- 
Matthew Fredrickson