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TDM to IP Multicast GW - Dormant voice ports

We are using Cisco 2921s to implement a land mobile radio over IP solution as a TDM E1 (radio lmr side) to Multicast gateway (for consoles/dispatch connections).  We have experienced issues with the voice ports going dormant after momentary interuption in the E1 circuit between the radio equipment and the E1 controller on the 2921.  The voice port remains in dormant stat until the port is shut/no shut or the 2921 is reloaded.  I've coppied a sh voice port 0/0/0:0 output below and parts of sh run.  The port type is set up as lmr.  The radio voice controller is a TDM E1 channel bank/conference bridge with no CAS signaling.  I am looking for help with bringing the port into service unconditionally?

isco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(2)T, RELEASE SOFTWARE (fc1)

voice-port 0/0/0:0

auto-cut-through

voice-class permanent 1

output attenuation 6

echo-cancel coverage 32

no comfort-noise

timeouts call-disconnect 3

connection trunk 1

description XXXX !removed per company policy

music-threshold -30

dial-peer voice 1 voip

destination-pattern 1

session protocol multicast

session target ipv4:x.111.7.111:20000 !removed multicast IP according to company policy

vad aggressive

recEive and transMit Slot is 0, Subslot is 0, Sub-unit is 0, Port is 0
Type of VoicePort is E&M
Operation State is DORMANT

Administrative State is UP
The Last Interface Down Failure Cause is Administrative Shutdown
Description is xxx

Noise Regeneration is disabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -30 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 6 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 32 ms
Echo Cancel worst case ERL is set to 6 dB
Playout-delay Mode is set to adaptive
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 1000 ms
Playout-delay Minimum mode is set to default, value 40 ms
Playout-delay Fax is set to 300 ms
Connection Mode is trunk
Connection Number is 1
trunk connection retry timer is 5 second
Initial Time Out is set to 15 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 3 s
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is A-law
Rx  A bit no conditioning set
Rx  B bit no conditioning set
Rx  C bit no conditioning set
Rx  D bit no conditioning set
Tx  A bit no conditioning set
Tx  B bit no conditioning set
Tx  C bit no conditioning set
Tx  D bit no conditioning set
Rx Seize ABCD bits = 1101 Default pattern
Rx Idle ABCD bits = 0001 Default pattern
Tx Seize ABCD bits = 1101 Default pattern
Tx Idle ABCD bits = 0001 Default pattern
Ignored Rx ABCD bits =  BCD
Region Tone is set for US

Analog Info Follows:
Currently processing Voice
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Station name None, Station number None
Translation profile (Incoming):
Translation profile (Outgoing):
lpcor (Incoming):
lpcor (Outgoing):

Voice card specific Info Follows:
Operation Type is 2-wire
E&M Type is 1
Signal Type is lmr
Dial Out Type is dtmf
In Seizure is inactive
Out Seizure is inactive
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Clear Wait Duration Timing is set to 400 ms
Wink Wait Duration Timing is set to 200 ms
Wait Wink Duration Timing is set to 550 ms
Wink Duration Timing is set to 200 ms
Minimum received Wink Duration Timing is set to 140 ms
Maximun received Wink Duration Timing is set to 290 ms
Minimum seizure Timing is set to 50 ms
Delay Start Timing is set to 300 ms
Delay Duration Timing is set to 2000 ms
Dial Pulse Min. Delay is set to 140 ms
Percent Break of Pulse is 60 percent
Auto Cut-through is enabled
Dialout Delay is 300 ms
Hookflash-in Timing is set to 480 ms
Voice hangover timing is set to 250 ms
lmr tear down timeout is set to 1800 second
lmr PTT Transmit timeout is set to 0 minutes
lmr PTT Receive timeout is set to 0 minutes
E-lead capability is seize
M-lead capability is inactive

DS0 channel specific status info:
                                      IN      OUT
PORT            CH  SIG-TYPE    OPER STATUS   STATUS    TIP     RING
=============== == ============ ==== ======   ======    ===     ====
0/0/0:0          01  e&m-lmr     up   idle     idle

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TDM to IP Multicast GW - Dormant voice ports

You can try updating IOS again.

If that doesn't help, you will need support from the TAC, asking to be immediately escalated to the Land Radio advanced support team.

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