IAD 243x PRI

Evan Roggenkamp · ‎09-02-2014

Hello all,

I can't seem to find any information as far as whether the modular versions of the Cisco IAD like Cisco IAD2431-8FXS will allow you to terminate a SIP trunk and output a PRI.

I was trying to do this on a IAD 2435 but I have been unable to configure the T1 WAN port at all thus far:

LAB-IAD-2435#sh ver
Cisco IOS Software, C2435 Software (C2435-ADVIPSERVICESK9-M), Version 15.1(4)M8, RELEASE SOFTWARE (fc2)

ROM: System Bootstrap, Version 12.4(20r)YA1, RELEASE SOFTWARE (fc1)

System image file is "flash:c2435-advipservicesk9-mz.151-4.M8.bin"

Cisco IAD2435 (MPC8300) processor (revision 0x100) with 249856K/12288K bytes of memory.
Processor board ID FCH1611T041
MPC8300 CPU Rev: Part Number 0x8062, Revision ID 0x11
2 FastEthernet interfaces
8 Voice FXS interfaces
256K bytes of non-volatile configuration memory.
126000K bytes of ATA CompactFlash (Read/Write)

LAB-IAD-2435#sh controllers t1
LAB-IAD-2435#

LAB-IAD-2435(config)#control?
control-plane

Thanks!

Chester Rieman · ‎09-02-2014

Yes it will:

http://www.cisco.com/c/en/us/td/docs/routers/access/iad2400/2430/software/configuration/guide/sw_conf/scgconf.html

Make sure you have an actual T1/E1 port and check that the card-type command has been configured

http://www.cisco.com/c/en/us/td/docs/ios/voice/command/reference/vr_book/vr_c4.html#wp1103424

Evan Roggenkamp · ‎09-08-2014

Thanks Chester! Your links point me in the right direction.

I must still be doing something wrong though, or doing unsupported function:

I have two 2435's connected with a T1 crossover cable. I never get successful ISDN negotiation with the PRI configuration. Details are below:

SIP-IN-PRI-OUT#sh isdn status
Global ISDN Switchtype = primary-ni
ISDN Serial1/0:23 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = AWAITING_ESTABLISHMENT
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x800000FF
Number of L2 Discards = 0, L2 Session ID = 5
Total Allocated ISDN CCBs = 0
SIP-IN-PRI-OUT#sh isdn status
Global ISDN Switchtype = primary-ni
ISDN Serial1/0:23 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x800000FF
Number of L2 Discards = 0, L2 Session ID = 6
Total Allocated ISDN CCBs = 0

SIP-IN-PRI-OUT#sh run int serial 1/0:23

interface Serial1/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn protocol-emulate network
isdn incoming-voice voice
isdn negotiate-bchan resend-setup
no cdp enable
end

PRI-DELIVERY-IAD#sh run int s1/0:23

interface Serial1/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
no cdp enable
end

SIP-IN-PRI-OUT#sh controllers t1 1/0
T1 1/0 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (164 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

PRI-DELIVERY-IAD#
*Mar 2 02:46:47.173: ISDN Se1/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
*Mar 2 02:46:47.173: ISDN Se1/0:23 Q921: User TX -> UAf sapi=0 tei=0
PRI-DELIVERY-IAD#
*Mar 2 02:46:48.173: ISDN Se1/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
*Mar 2 02:46:48.173: ISDN Se1/0:23 Q921: User TX -> UAf sapi=0 tei=0
PRI-DELIVERY-IAD#
*Mar 2 02:46:49.173: ISDN Se1/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
*Mar 2 02:46:49.173: ISDN Se1/0:23 Q921: User TX -> UAf sapi=0 tei=0

SIP-IN-PRI-OUT#
*Mar 15 22:30:24.739: ISDN Se1/0:23 Q921: L2_EstablishDataLink: sending SABME
*Mar 15 22:30:24.739: ISDN Se1/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
*Mar 15 22:30:25.739: ISDN Se1/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
SIP-IN-PRI-OUT#
*Mar 15 22:30:26.739: ISDN Se1/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
*Mar 15 22:30:27.739: ISDN Se1/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
SIP-IN-PRI-OUT#
*Mar 15 22:30:28.739: ISDN Se1/0:23 Q931: Ux_DLRelInd: DL_REL_IND received from L2

Chester Rieman · ‎09-08-2014

Looks like you are close - try a shut/no shut on the T1s:

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/8131-T1-pri.html

This has the details of debug isdn q921, looks like SIP-IN-PRI-OUT is only sending SAMBE and not receiving any.

Hope this helps....

Evan Roggenkamp · ‎09-08-2014

Thanks again

I had to add "clock source internal" on SIP-IN-PRI-OUT and "clock source line" on the PRI-DELIVERY-IAD but now the first still alternates between TEI_ASSIGNED & AWAITING_ESTABLISHMENT and the latter shows MULTIPLE_FRAME_ESTABLISHED. I am not sure this is normal behavior. I always thought if one side showed MULTIPLE_FRAME_ESTABLISHED the other would as well...