Sure. The key is who is providing the ISDN NNI.
!
controller T1 1/0
framing esf
linecode b8zs
cablelength short 133
pri-group timeslots 1-24
description PRI to Nortel
!
interface Serial1/0:23
description PRI To Nortel
no ip address
no logging event link-status
isdn switch-type primary-dms100
isdn incoming-voice voice
isdn protocol-emulate network <-- This turns the interface into the PRI NNI. Just configure the other (User) side without this command because user is default.
This is in an H.323 Flavor btw since you are providing a PRI Emulation Purposes. If you have an HDV2 with a 2MFT add on you can route calls with 4 ports. One port per CPE PRI and the other two PRI's using H323 pots dialpeers to route calls from one CPE to another. It worked great for my CCIE Voice studies.
If you need to make back to back PRI cables use these pinouts:
SIDE A SIDE B
Pin 1 to Pin 5
Pin 2 to Pin 4
Pin 4 to Pin 2
Pin 5 to Pin 1
When you do a sh isdn status on the PRI NNI Side you must expect to see that ******** Network Side Configuration ********* As seen below:
HMS_Gateway#sh isd st
Global ISDN Switchtype = primary-dms100
ISDN Serial1/0:23 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-dms100
L2 Protocol = Q.921 L3 Protocol(s) = CCM-MANAGER
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 = 199
Let me know how this works for you or if you need more detailed configurations.
Mike
