Configuring Your Rhino Digital Card For E1 Signalling

The basic principle is that we need set E1 mode at the driver level. There are no jumpers or any other physical changes that need to be made for Rhino OST PCI Digital Cards to work in E1 mode. Everything is done at the driver level.

1) Install the Digital PCI card into your server

If you are unclear on how to install your PCI card into your server please see the following documentation:

2) Install the Rhino drivers

trixbox CE users please use an updated package that is located at

All other distrobutions please use the package located at

3) Either insmod or modprobe with E1

NOTE: Make sure that the r1t1 or rxt1 drivers are not loaded when trying to switch to E1

insmod /lib/module/`uname -r`/extra/r1t1.ko e1=1

or you should be able to just modprobe with the settings

modprobe r1t1 e1=1

Generally you will need to have the modprobe r1t1 e1=1 in whatever file that you set to call the module on system start up.

If you are using an r1t1 then use:

modprobe r1t1 e1=1

For an r2t1 or r4t1 use:

modprobe rxt1 e1=15

4) Next, make sure that you now have 31 channels on your zaptel span

cat /proc/zaptel/*

5) Configuring of the card is now necassary, lets edit /etc/zaptel.conf

NOTE: This is just a generic view of what the zaptel.conf should look like


(NOTE- the framing is dependent on what your carrier uses Rhino has no knowledge of what you should be specifically using for your telephony system)


dchan= 16

6) Now configure /etc/asterisk/zapata.conf or zapata-auto.conf or you may even be using zapata-channels.conf




7) Now define your trunks and dialing routes and test.

If you are still experiencing difficulties please contact Rhino Support immediately and we will get you setup right away!

Leave a Reply