[Asterisk-Users] Outgoing call with bad/choppy sound

[Ing. Angel Gomez Garcia]

    Hi all.

    I have this configuration:


Telco <-----(E1)----->TE410P//Dual Xeon Server 
2.4Ghz<-----(Ethernet)----->Switch<----->GS//BT

    The Server is running RedHat Linux 8.0 with kernel 2.4.18-14-smp and 
we are having the following 2 issues:

    1.- When making calls from the GrandStream to the PSTN the audio is 
choopy, plus theres is a pulsing sound, but when the GS receives calls 
it sounds great.

    2.- We are not receiving any callerd id from the PSTN, this may be 
an issue with the E1 provider, will checkit, but again, it might not.

    Thank's in advance for any help.

    Configuration:

/etc/zaptel.conf
----------------------
span=1,0,0,ccs,hdb3,crc4
span=2,0,0,ccs,hdb3,crc4
span=3,0,0,ccs,hdb3,crc4
span=4,0,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16
bchan=32-46,48-62
dchan=47
bchan=63-77,79-93
dchan=78
bchan=94-108,110-124
dchan=109
loadzone=us
defaultzone=us

/etc/asterisk/zapata.conf
----------------------------------
[channels]
callwaiting=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
echocancel=yes
echocancelwhenbridged=no
rxgain=0.0
txgain=0.0
group=1
immediate=no
amaflags=default
switchtype=5ess
signalling=pri_cpe
pridialplan=unknown
context=default
usecallerid=yes
hidecallerid=no
callerid=asreceived
channel=>1-15,17-31

/etc/asterisk/sip.conf
-----------------------------
[general]
port=5060
bindaddr=0.0.0.0
externip='some-ip'
context=default
disallow=all
allow=gsm
allow=ulaw
allow=alaw
allow=g729
tos=lowdelay
register=67373:'passwd'@fwd.pulver.com/0100

[fwd.pulver.com]
type=friend
secret='passwd'
username=67373
host=fwd.pulver.com
context=default
nat=yes
fromuser=67373
fromdomain=fwd.pulver.com
reinvite=no
canreinvite=no
qualify=500

;The GS/BT
[pedro]
type=friend
host=dynamic
dtmfmode=inband
mailbox=320
username=pedro
secret='passwd'
nat=no
callgroup=1
pickupgroup=1
disallow=all
allow=ulaw
callerid="Pedro" <320>

[67373]
type=friend
host=fwd.pulver.com
context=default
nat=yes
fromdomain=fwd.pulver.com
reinvite=no
canreinvite=no
qualify=500
disallow=all
allow=all