Hello, I too am having an echo issues. My partner an I have discussed
this in depth and believe that digital circuits can not create the echo
problem. It's when it hits the Analog network or in my cases ATA's that
are having echo problems. I have another gateway that does not have any
echo on the same Sipura ATA's. I have also notices that the Asterisk
levels are very hot from T1-PRI to Sip. I have not had the chance to
turn them down but I think this is where my echo problem is occurring
because the Digital levels are too much for the ATA to convert. I will
let you know if I find this to be true.
Michael Schelin / ShellTel
Ronald Hartmann wrote:
Good Day all,
I have a Fractional PRI connected to my Asterisk Box via a T100P
card.
When I initiate a call out to phone number 123-8888 the call
sounds great no echo what so ever.
If the person at 123-8888 hangs up and calls me right back (same
handset on both sides) same trunk line
The call always has echo on it. The Asterisk sip extension
hears them selves echoing. The remote party does not notice any
difference.
I have tried all the following.
#define CONFIG_ZAPTEL_MMX <tried this defined and undefined>
Then tried each of the following types of echo cancellations.
#define ECHO_CAN_MARK
#define ECHO_CAN_MARK2 with and without #define
AGGRESSIVE_SUPPRESSOR
#define ECHO_CAN_MARK3
I am completely at a loss on how to get rid of this echo problem. The
system is completely useless for incoming calls, as it currently stands.
Is there a Digium card that handles echo better? Are there any asterisk
compatible cards with hardware echo cancellation available?
Thanks
Ron
[Zapata.conf]
span=1,1,0,esf,b8zs
bchan=19-23 # set this to 1-15,17-31 for E1
dchan=24 # set this to 16 for E1
defaultzone=us
loadzone=us
[Zaptel.conf]
[channels]
language=en
signalling=pri_cpe
switchtype=national
pridialplan=unknown
echocancel=yes
echocancelwhenbridged=yes (tried no)
echotraining=400 (tried 800 also)
usecallerid=yes
callerid=asreceived
overlapdial=yes
immediate=no
group=0,1
context=from-pstn
channel => 19-23
_______________________________________________
Asterisk-Users mailing list
[email protected]
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
_______________________________________________
Asterisk-Users mailing list
[email protected]
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
