The PRI module need to be supporting data channel instead of voice only.
(eg. HWIC-1CE1T1-PRI)
The following configurations work on Malaysia PRI network.
First, you need to activate the PRI module.
card type e1 0 1
Configure the PRI module for E1 channel with PRI groups.
controller E1 0/1/0
pri-group timeslots 1-31
pri-group timeslots 1-31
The primary link configuration
interface Serial0/0
description Primary Link
bandwidth 1024
backup interface Dialer1
ip address x.x.x.x y.y.y.y
description Primary Link
bandwidth 1024
backup interface Dialer1
ip address x.x.x.x y.y.y.y
The PRI D-channel configuration, mostly involve the encapsulation and isdn switch type.
interface Serial0/1/0:15
description PRI Backup
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type primary-net5
ppp authentication chap
ppp multilink
description PRI Backup
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type primary-net5
ppp authentication chap
ppp multilink
The Dialer interface configuration. Normally, only one site require the dialer string input as there will be only one site initiate the dialling while the other site listen.
As CHAP authentication will be used, so the device credential must be created on each router.
The following example will be Site A dialing while Site B listening.
Site B Device
As CHAP authentication will be used, so the device credential must be created on each router.
The following example will be Site A dialing while Site B listening.
Site B Device
username remote_siteA password abc
interface Dialer 1
bandwidth 1024
ip address a.a.a.a b.b.b.b
encapsulation ppp
dialer pool 1
dialer remote-name remote_siteA
dialer idle-timeout 600
dialer load-threshold 1 outbound
dialer-group 1
ppp authentication chap
ppp multilink
Site A Device
username remote_siteB password abc
interface Dialer 1
bandwidth 1024
ip address a.a.a.b b.b.b.b
encapsulation ppp
dialer pool 1
dialer remote-name remote_siteB
dialer string #######
dialer persistent
dialer idle-timeout 600
dialer load-threshold 1 outbound
dialer-group 1
ppp authentication chap
ppp multilink
The timeout/idle timer can be adjusted to prevent the line stuck.
The ip route configurations,
ip route c.c.c.c d.d.d.d Serial0/0/0
ip route c.c.c.c d.d.d.d Dialer1 200
