[Asterisk-Users] TE205P E1 PRI card and other problems

[Antoine Megalla]

I some have problems with TE205P E1 PRI card.
The Asterisk installation is as follows:

Zaptel-1.2 drivers with Asterisk CVS HEAD from
November First
1 TE205P E1 card with span 1 connected to the PSTN and
span 2 connected to 
the digital E1 interface card of a Panasonic super
hybrid PBX.
1 Voicetronix VPB4 card connected to the analog
interface of the PBX (For 
dialing internal PBX extensions and mobile phones)

Agents using SIP softphones use the TE205P to make
outgoing calls on span 1 
connected to the PSTN.
Incoming calls on span 1 are bridged to span 2 and the
call is passed to the 
PBX.

TE205P seems to drop the calls from the PSTN side.
This happens quite often 
and is causing great losses for the business. The
calls being dropped are 
either incoming or outgoing.

The reason I couldn't use Asterisk-1.2 with zaptel-1.2
drivers is that I am 
using the mysql realtime extensions on the system and
Asterisk-1.2 seems to 
have problems with mysql realtime so I had to fall
back on the CVS HEAD of 
November which works greatly with mysql and also with
the TE110P card.

Here is my /etc/zaptel.conf  file:

span=1,1,0,ccs,hdb3,crc4
span=2,0,0,ccs,hdb3,crc4

bchan=1-15
dchan=16
bchan=17-31

bchan=32-46
dchan=47
bchan=48-62

loadzone = fr
defaultzone=fr



And here is my /etc/asterisk/zapata.conf
;
; Zapata telephony interface
;
; Configuration file

[trunkgroups]
; Spanmap: Associates a span with a trunk group
;        spanmap =>
<zapspan>,<trunkgroup>[,<logicalspan>]
;spanmap => 1,1,1
;spanmap => 2,1,2
;spanmap => 3,1,3
;spanmap => 4,1,4

[channels]
context=default
switchtype=euroisdn
pridialplan=unknown
; Overlap dialing mode (sending overlap digits)
;overlapdial=yes
;
signalling=pri_net
usecallerid=yes
hidecallerid=no
callwaiting=yes
;usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
;canpark=yes
;cancallforward=yes
;callreturn=yes
echocancel=yes
echocancelwhenbridged=no
rxgain=0.0
txgain=0.0

;
; Logical groups can be assigned to allow outgoing
rollover.  Groups
; range from 0 to 63, and multiple groups can be
specified.
;
group=1
callgroup=1
pickupgroup=1

immediate=no
callprogress=no

group=1
signalling=pri_cpe
channel=>1-15
channel=>17-31

group=2
signalling=pri_net
channel=>32-46
channel=>48-62


I did some tracing and discovered that the TE205P card
is sharing the IRQ 
with the Ethernet card, can this be the problem. If so
how can I put each 
card on a separate IRQ (No free IRQs on the system).

I also have horrible echo problems on the Voicetronix
card, I have tried 
everything to solve the problem with no success. The
only thing that seems 
to lessen the ECHO is to reduce the rx gain for both
hardware and software, 
but I still get an audible echo on the line.

Thanks and best regards,

Antoine Megalla
SAND (SA.E)
www.sandvalley.net



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