User manual

Release 2.2 Digium, Inc. Page 42
Chapter 3: Configuration
Third Example: PRI
By setting the card to take timing in zaptel.conf, you acquire 23 b
channels and voice channels, with channel 24 as the data transport. For
Asterisk, define PRI_CPE so that it is the client side. Define the switch
type you are connecting to as national. There are several options for the
switch type including 5ESS, 4ESS, and NI1. You will then have 23 voice
channels for Asterisk.
PRI T1
/etc/zaptel.conf:
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24
/etc/asterisk/zapata.conf
group=1
signalling=pri_cpe
switchtype=national
context=incoming
channel=1-23