I am testing the TA908E with AOS R11.12.0.E for PRI. For troubleshooting purposes and fractional PRI's I am looking for a way to take b-channels out of service or maintenance block mode. We're transitioning from Cisco IAD2432 to Adtran and I want to configure channels 1-24 and then take some channels out of service for a partial PRI. We sometimes get requests to add channels, it is easier to unblock the channels rather than deleting the "tdm-group" and re-creating it as a new range.
I've tried setting "max-channels 5" in the "isdn-group 1" section and it does show a status message that it is taking 18 b-channels out of service however in my "show int pri 3" appears that the channels are all inactive and none are in maintenance or unallocated status. How do I change the status of individual b-channels (maintenance blocked / out of service).
interface pri 3
isdn name-delivery setup
connect t1 0/3 tdm-group 1
isdn supplementary-service tbct
no shutdown
!
interface t1 0/3
fdl none
tdm-group 1 timeslots 1-24 speed 64
no shutdown
isdn-group 1
max-channels 5
connect pri 3
TA908ePRI(config)#isdn-group 1
Configuring Existing ISDN group "1".
TA908ePRI(config-isdn-group 1)#max-channels 5
2016.05.19 11:49:02 TM.T01 0 Taking 18 b-channels out-of-service
TA908ePRI#show int pri 3
pri 3 is UP
Description: PRI TEST
Alias: PRI 3
Switch protocol: National ISDN 2
Signaling role: network (NT) b-channel-restarts disabled
b-channel-restarts: disabled
Calling-party override: disabled
Calling-party presentation: allowed
Calling-party screening: auto
Calling-party number: (no number configured)
Digits transferred all
Name-delivery: via Setup msg / Facility IE
Progress indicator #8 in alerting message: enabled
Progress indicator #2 in connect message: disabled
Progress indicator #1 in setup message: disabled
Progress indicator #3 in setup message: disabled
Progress indicator location: public
resource-selection: linear descending
TBCT: enabled
area code:
Transmission of redirecting numbers is enabled
Redirecting numbers: sent as received
Connected interface: t1 0/3 tdm-group 1
Channel status 123456789012345678901234
.......................D
Legend: - = Unallocated . = Inactive
A = Active B channel B = Backup D channel
D = Active D channel M = Maintenance
R = Restart
Last clearing of "show interface" counters: never
10058 packets input, 40215 bytes, 0 no buffer
0 runts, 0 giants, 0 throttles
3 input errors, 1 CRC, 1 frame
1 abort, 0 discards, 0 overruns
10090 packets output, 40309 bytes, 0 underruns
