User guide

Instead of using a traditional fixed phone, we decide to connect a cordless DECT phone base station
35
to the RJ-11 port of the ATA box. The result is that we can have a cordless phone in any part of the
hospital. The ATA box bridges the cordless phone with the VoIP network.
Image 7: The Hospital is connected via a 100 meter Cat5 Ethernet to the Telecentre. A DECT phone is
connected to a ATA (running SIP) that has registered with the PBX of the Telecentre.
7.2.3 Primary School
The third client in our network, the Primary school, is in a building adjacent to the Telecentre and can
therefore also be connected by a twisted pair cable.
Another ATA box, this time running IAX2 instead of SIP, is placed in the primary school. We are using a
simple ATA box (FXS interface) known as s101i or IAXy. To the ATA box, we connect any kind of
analogue phone that we can find.
The IAXy does not provide a web configuration interface. The easiest way to configure the IAXy is to
use Asterisk itself. The first time that you connect the ATA, it will grab an IP address via DHCP, check
the logs of your DHCP server and write down the assigned IP address. The next step is to edit the file /
etc/asterisk/iaxprov.conf and add a section that looks like this:
[iaxy_school]
ip: 192.168.46.4
netmask: 255.255.255.0
gateway: 192.168.46.1
codec: ulaw
server: 192.168.46.1.2
user: 464
pass: 464pass
35. DECT, or Digital Enhanced (formerly European) Cordless Telecommunications, is a standard for digital portable phones
operating in 1.9 Ghz.
Page 29 TRICALCAR | www.wilac.net/tricalcar – Version: February 2008