[Freeswitch-users] Sangoma card pri not coming up on new architecture servers

Fri Aug 18 07:52:54 UTC 2017

Hi,

We are facing issues with sangoma card in the new hardware dell server (Dell
T30) with Xeon processor. 

Also we have observed same issue in i7 based servers.

With same configuration, same pri and same sangoma card, it is working fine
in an old machine with intel core i3 and i5 processor.

We are using freeswitch v1.6.6 but on upgrading to freeswitch v1.6.19 issue
still persists. 

In this signalling layer does not come up on the new hardware Xeon, intel
core i7. 

This is a new installation on a brand new dell server (Dell T30). 

freeswitch at internal> ftdm list 

+OK 

span: 1 (wp1) 

type: Sangoma (ISDN) 

physical_status: ok 

signaling_status: DOWN 

chan_count: 31 

dialplan: XML 

context: public 

dial_regex: 

fail_dial_regex: 

Also we get following log trace in freeswitch cli:

2017-07-27 12:44:50.934840 [INFO] ftmod_sangoma_isdn_stack_rcv.c:825
[SNGISDN Q931] s1: Interface: UP(260): Dchan(285)

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c1][1:1]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c2][1:2]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] ftmod_sangoma_isdn_stack_rcv.c:675
Received RESTART CFM (dChan:1 ces:0 type:0)

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c3][1:3]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c4][1:4]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:1 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c5][1:5]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c6][1:6]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:2 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c7][1:7]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:3 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c8][1:8]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:4 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:5 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c9][1:9]
Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c10][1:10] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:6 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c11][1:11] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:7 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c12][1:12] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c13][1:13] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:8 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c14][1:14] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:9 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c15][1:15] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c16][1:17] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:10 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c17][1:18] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c18][1:19] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:11 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c19][1:20] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c20][1:21] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:12 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c21][1:22] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c22][1:23] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:13 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c23][1:24] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c24][1:25] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:14 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c25][1:26] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c26][1:27] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:15 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c27][1:28] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:16 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c28][1:29] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c29][1:30] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:17 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c30][1:31] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c31][1:16] Signalling link status changed to UP

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:18 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:19 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:20 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:21 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:22 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:23 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:24 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:25 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:26 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:27 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:28 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:29 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:30 signalling changed
to :UP

2017-07-27 12:44:50.934840 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:50.934840 [INFO] mod_freetdm.c:2781 1:31 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_trace.c:117 [SNGISDN
Q921] wp1 FRAME INCOMING:

  format: Unnumbered

  sapi: 000  c/r: 1  ea: 0

   tei: 000          ea: 1

   p/f: 1

   cmd: DM - disconnected mode

  [ 02 01 7f ]

2017-07-27 12:44:51.934784 [INFO] ftmod_sangoma_isdn_stack_rcv.c:825
[SNGISDN Q931] s1: Interface: UP(260): Dchan(285)

2017-07-27 12:44:51.934784 [INFO] ftmod_sangoma_isdn_stack_rcv.c:675
Received RESTART CFM (dChan:1 ces:0 type:0)

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c1][1:1]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c2][1:2]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c3][1:3]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c4][1:4]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c5][1:5]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c6][1:6]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c7][1:7]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:1 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c8][1:8]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45 [s1c9][1:9]
Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:2 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c10][1:10] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:3 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c11][1:11] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:4 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c12][1:12] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:5 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c13][1:13] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c14][1:14] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:6 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c15][1:15] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:7 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c16][1:17] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c17][1:18] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:8 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c18][1:19] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c19][1:20] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:9 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c20][1:21] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:10 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c21][1:22] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:11 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c22][1:23] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c23][1:24] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:12 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c24][1:25] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c25][1:26] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:13 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c26][1:27] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c27][1:28] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:14 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c28][1:29] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:15 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c29][1:30] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:16 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c30][1:31] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [DEBUG] ftmod_sangoma_isdn_cntrl.c:45
[s1c31][1:16] Signalling link status changed to UP

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:17 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:18 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:19 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:20 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:21 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:22 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:23 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:24 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:25 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:26 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:27 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:28 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:29 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:30 signalling changed
to :UP

2017-07-27 12:44:51.934784 [DEBUG] mod_freetdm.c:2705 got clear channel sig
[SIGSTATUS_CHANGED]

2017-07-27 12:44:51.934784 [INFO] mod_freetdm.c:2781 1:31 signalling changed
to :UP

2017-07-27 12:44:52.934775 [DEBUG] ftmod_sangoma_isdn_trace.c:117 [SNGISDN
Q921] wp1 FRAME INCOMING:

  format: Unnumbered

  sapi: 000  c/r: 1  ea: 0

   tei: 000          ea: 1

   p/f: 1

   cmd: DM - disconnected mode

  [ 02 01 7f ]

We had also upgraded the bios of the server but that had no effect 

Also we were suggested to upgrade the bios to latest version. Which was also
done and made no effect on our issue. 

It seems we are receiving SABME but sending nothing in return. Their are no
RX and TX counter increment.

Do let me know if you need more information.

Any idea what could we do to mitigate this?

-- 

Best  Regards,

Abhishek Sharma

Senior Systems Engineer

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