Using PRI - E 1 in India

[dev_4901]

Hi,

Just wanted to know if anyone has successfully implemented asterisk with PRI E1 line in India.
What cards (Digium or clones) are you using for the line termination on the server(s) ?
What are the configurations required in zapata.conf and zaptel.conf ?
What voice codecs are used ? (ulaw/alaw/g729)
What kind of phones would be used ?(IP phones / analog phones) ?

Plz advice.

Regards,
Dev Singhal

[asterisk_at_my_risk]

its simple just have line code and framing info from your serive provider
it will be better if go for sangoma or digium E1 card
codec will be g711

if you have any issue just post on the forum

[diyanat]

I have used Digium cards single port TE110p and 4 port TE405P , they work well with tata indicom, airtel, bsnl/mtnl PRI lines, i had issues making it work with reliance PRI lines and still trying, you may need to use cross cable with tata indicom PRI line

typical working config for TE110P is

zaptel.conf

span=1,1,0,ccs,hdb3
bchan=1-15,17-31
dchan=16
loadzone=uk
defaultzone=uk

zapata.conf
[trunkgroups]

[channels]

language=en
context=from-zaptel
switchtype=euroisdn
pridialplan=unknown
priindication=outofband
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
callgroup=1
pickupgroup=1
immediate=no
echotraining=800
echocancel=yes
echocancelwhenbridged=no
relaxdtmf=yes
musiconhold=default
immediate=no
txgain=0.0
rxgain=0.0
group=1
signalling=pri_cpe
channel=>1-15,17-31
overlapdial=yes



please post if you need more details


Diyanat

[dev_4901]

Thanx guys for your replies.

My current requirement is that I plan to get VICIDIAL to work upon a domestic process.

So I thought of using PRI lines in conjuction with DIGIUM or clone cards.

The questions that still need to be answered before I take up this new venture is:

1. Is this feasible and workable?

2. What would be the hardware including server and cards that I would require for about 20 ports running INBOUND as well as OUTBOUND Indian domestic process?

3. What would be the actual connectivity of the hardware/servers and how do I go about implementing this?

Advice and valuable inputs from you guys could really help a lot.

Thanx in advance.

Dev Singhal

[diyanat]

Its feasible and your best option, I am running a 100 seater with 4 PRI lines and 4 servers 1 DB and 3 asterisk

you will require 1 PRI line and a TE110 digium card or Sangoma A101 card

The hardware you require for 20/30 seats on a single server with Linux mysql apache asterisk and zaptel

2 CPU dual core Xeon 2.6/3.0 Ghz
4 GB RAM
15 k RPM SAS 4 disks raid 10 or 2 disks raid 1 or single disk raid 0( for recordings) or SATA disk for no recordings
1000 mbps ethernet NIC

The motherboard should have a PCI 3.3v/5v slot depending on the card or you may need to get a PCI express card or a PCI riser card, order the card after u check the PCI slots on the board

dont use the intel Gigabit e1000 compatible NIC cards, they have a problem of getting freezed on high traffic, you may need to install the latest drivers to fix this issue

On the agents side you can use a desktop PC with xlite/idefisk and a normal headset , if you very particular about echo which is rare on PRI lines then go for a Plantronics USB headset with noise reduction and echo cancellation, use ulaw as the preferred codec

All the best

Regards

Diyanat