[OSL | CCIE_Voice] MGCP PRI L2 issue

[Juan Lopez Hernandez -X (jlopezhe - IBM - INS at Cisco)]

Hi all,
 
today, I swapped some HW in my lab, replacing the NM-HDV by
NM-HDV2-1T1/E1. I had a working MGCP GW, connected via PRI to the PSTN.
When using the NM-HDV2, I expercience a L2 issue (see debug below),
causing all calls over that PRI to fail. I doubt that the HW is broken
in this case, and it's a matter of a missing command... Does anybody
have a clue or experienced the same - please let me know. I attached the
config used on the GW - it's functionally not different from the working
one when using the NM-HDV.
 
ps: I have a PVDM2 sitting on the NM-HDV2, from which a part will be
used as dspfarm ('voice-card 1')
 
Kind regards,
Juan
 
 
 
 
isdn switch-type primary-ni
voice-card 1
 dspfarm
 dsp services dspfarm
 
controller T1 1/1
 framing esf
 linecode b8zs
 cablelength short 133
 pri-group timeslots 1-3,24 service mgcp
 
interface Serial1/1:23
 no ip address
 isdn switch-type primary-ni
 isdn incoming-voice voice
 isdn bind-l3 ccm-manager
 no cdp enable
 
voice-port 1/1:23
 
dial-peer voice 999 pots
 application mgcpapp
 incoming called-number .
 port 1/1:23
 
BR1-RTR#sh isdn status
Global ISDN Switchtype = primary-ni
 
%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may
not apply
 
ISDN Serial1/1:23 interface
        dsl 0, interface ISDN Switchtype = primary-ni
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003 
    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)
 
BR1-RTR#debug isdn q921
debug isdn q921 is              ON.
BR1-RTR#term mon
BR1-RTR#
Feb  2 21:21:20.940: ISDN Se1/1:23 Q921: S7_T203_EXPIRY: Lost
communication with remote.
Feb  2 21:21:20.940: ISDN Se1/1:23 Q921: User TX -> RRp sapi=0 tei=0
nr=0
Feb  2 21:21:20.944: ISDN Se1/1:23 Q921: User RX <- RRp sapi=0 tei=0
nr=0
Feb  2 21:21:20.944: ISDN Se1/1:23 Q921: User TX -> RRf sapi=0 tei=0
nr=0
Feb  2 21:21:20.944: ISDN Se1/1:23 Q921: User RX <- RRf sapi=0 tei=0
nr=0