ISDN PRI Loopback Plug
ajr3v Oct 27, 2017 4:01 PMI'm trying to bring up a SIP to PRI setup in the lab
I've setup my PRI and SIP trunks.
However, I am unable to bring up the D-Channel using a loopback plug. I am just receiving continues SABME messages
PIN 1 -> PIN 4
PIN 2 -> PIN 5
01:59:21.346 ISDN.L2_FMT PRI 1 ==============================================
01:59:21.346 ISDN.L2_FMT PRI 1 Sent Sapi:00 C/R:C Tei:00 Ctl:SABME P:1
01:59:21.351 ISDN.L2_FMT PRI 1 ==============================================
01:59:21.351 ISDN.L2_FMT PRI 1 Recd Sapi:00 C/R:C Tei:00 Ctl:SABME n
01:59:22.345 ISDN.L2_FMT PRI 1 ==============================================
01:59:22.346 ISDN.L2_FMT PRI 1 Sent Sapi:00 C/R:C Tei:00 Ctl:SABME P:1
01:59:22.351 ISDN.L2_FMT PRI 1 ==============================================
01:59:22.351 ISDN.L2_FMT PRI 1 Recd Sapi:00 C/R:C Tei:00 Ctl:SABME P:
01:59:23.345 ISDN.L2_FMT PRI 1 ==============================================
01:59:23.346 ISDN.L2_FMT PRI 1 Sent Sapi:00 C/R:C Tei:00 Ctl:SABME P:1
01:59:23.350 ISDN.L2_FMT PRI 1 ==============================================
TA904#sho int t1 0/2
t1 0/2 is UP
Receiver has no alarms
T1 coding is B8ZS, framing is ESF
FDL type is ANSI
Line build-out is 0dB
No remote loopbacks, No network loopbacks
Acceptance of remote loopback requests enabled
Tx Alarm Enable: rai
Last clearing of counters 02:13:34
loss of frame : 9, last occurred 00:27:33
loss of signal : 8, last occurred 00:27:32
AIS alarm : 1, last occurred 01:43:48
Remote alarm : 0
DS0 Status: 123456789012345678901234
XXXXXXXXXXXXXXXXXXXXXXXX
Status Legend: '-' = DS0 is not allocated
'X' = DS0 is allocated (nailed)
Signaling Bit Status: 123456789012345678901234
RxA: 100100001001000000000000
RxB: 010000000100010000000000
TxA: 010001000000100100001001
TxB: 010001000000010000000100
123456789012345678901234
Line Status: -- No Alarms --
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
Current Performance Statistics:
0 Errored Seconds, 0 Bursty Errored Seconds
0 Severely Errored Seconds, 0 Severely Errored Frame Seconds
0 Unavailable Seconds, 0 Path Code Violations
0 Line Code Violations, 0 Controlled Slip Seconds
0 Line Errored Seconds, 0 Degraded Minutes
TDM group 1, line protocol is not set
Encapsulation is not set
TA904#show interfaces pri 1
pri 1 is DOWN
Switch protocol: National ISDN 2
Signaling role: network (NT) b-channel-restarts enabled
Ringing signal: calling TE provides audible ringing
Calling-party override: disabled
Calling-party presentation: allowed
Calling-party number: (no number configured)
digits transferred all
ISDN name-delivery: via Facility msg following Proceeding msg
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: circular descending
TBCT: disabled
area code:
Transmission of redirecting numbers is enabled
Redirecting numbers: sent as received
Connected interface: t1 0/2 tdm-group 1
Channel status 123456789012345678901234
........................
Legend: - = Unallocated . = Inactive
A = Active B channel B = Backup D channel
D = Active D channel M = Maintenance
R = Restart
2206 packets input, 6618 bytes, 0 no buffer
0 runts, 6 giants, 0 throttles
21 input errors, 9 CRC, 1 frame
11 abort, 0 discards, 0 overruns
2536 packets output, 7608 bytes, 0 underruns
Configuration
interface t1 0/2
tdm-group 1 timeslots 1-24 speed 64
no shutdown
!
!
interface pri 1
isdn name-delivery proceeding
connect t1 0/2 tdm-group 1
role network b-channel-restarts enable
no shutdown
!
!
isdn-group 1
connect pri 1
!
!
!
!
timing-source t1 0/2
!
timing-source internal secondary
!
!
voice feature-mode network
voice forward-mode network
!
!
!
voice trunk T01 type sip
sip-server primary **HIDDEN**
registrar primary **HIDDEN**
registrar expire-time 0
!
voice trunk T02 type isdn
description "PRI"
resource-selection circular descending
connect isdn-group 1
rtp delay-mode adaptive
!
!
voice grouped-trunk SIP
trunk T01
accept $ cost 0
!
!
voice grouped-trunk PRI
trunk T02
accept $ cost 0
Am I missing something?
T1 and PRI's are new to me, bringing it into the lab to understand them better.
Thanks!