Hello Suryakant,

>> How to configure E1 controller

for what ?

a) DATA

b) voice

a) DATA

unframed: all timeslots used a single stream

controller E1 6/1/7

channel-group 0 unframed

!

this creates a L3 serial interface named ser6/1/7:0 that you can configure as a normal sync serial:

interface Serial6/1/7:0

bandwidth 2048

ip address 10.25.25.2 255.255.255.252

no ip directed-broadcast

ip router isis f1

encapsulation ppp

load-interval 30

keepalive 1

no cdp enable

!

within data you can also:

have a single channel-group using all the slots

controller e1 0/0

channel-group 0 timeslots 1-31

or fractional

controller e1 0/0

channel-group 1 timeslots 1-15

channel-group 2 timeslots 16-31

the second creates two serial intefaces

ser0/0:1

ser0/0:2

Hope to help

Giuseppe