Step 4
Use the show controller t1 command to display T1 status. Verify that the T1 is UP and that there are no errors.

Router> show controller t1 0
T1 0 is up.
Applique type is Channelized T1
Cablelength is short 133
No alarms detected.
alarm-trigger is not set
Version info of slot 0: HW: 1, PLD Rev: 11
Framer Version: 0x8
!
!
!
Framing is ESF, Line Code is B8ZS, Clock Source is Line Primary.
Data in current interval (0 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Step 5
Use the show isdn status command to display ISDN status. Verify the ISDN Layer 2 status is MULTIPLE_FRAME_ESTABLISHED.

Router> show isdn status
Global ISDN Switchtype = primary-ni
ISDN Serial0:23 interface
dsl 0, interface ISDN Switchtype = primary-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x807FFFFF
Number of L2 Discards = 0, L2 Session ID = 3
Total Allocated ISDN CCBs = 0
Step 6
Use the show isdn service command to display the status of each ISDN channel. Verify that the channels are IDLE and IN-SERVICE.

Router> show isdn service
PRI Channel Statistics:
ISDN Se0:23, Channel [1-24]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
Service State (0=Inservice 1=Maint 2=Outofservice)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
Step 7
Use the show dial-peer voice summary command to display voice dial peer information. Verify that Admin and Operation status are up and up.

Router> show dial-peer voice summary
AD PRE PASS
TAG TYPE MIN OPER PREFIX DEST-PATTERN FER THRU SESS-TARGET PORT
1 pots up up 0 0:D
2 voip up up 83101 0 syst ipv4:172.69.85.107