Hi All
We have following setup
Asterisk 1.2.10 , Zaptel-1.2.11 Chan_ss7-0.8.4 on RHEL 4.4 with digium TE410p card we are using this server for Broadcasting Messages
We have 4E1’s lines coming from Siemens gsm switch with ss7 signaling on 1st and 2nd E1. attached zaptel and ss7.conf files bellow
We have problem of ss7 link frequently fluctuating when there is little heavy load of dialouts
Attached bellow is the part of message log of asterisk when the link goes down.
Appreciate some help on this.
Regards
Nischal…
Zaptel.conf ********************************************************
span=1,0,0,ccs,hdb3
bchan=1-31
span=2,0,0,ccs,hdb3
bchan=32-62
span=3,0,0,ccs,hdb3
bchan=63-93
span=4,0,0,ccs,hdb3
bchan=94-124
ss7.conf************************************************************
[linkset-siuc]
; The linkset is enabled
enabled => yes
; The end-of-pulsing (ST) is not used to determine when incoming address is complete
enable_st => yes
; Reply incoming call with CON rather than ACM and ANM
use_connect => yes
; The CIC hunting policy (even_mru, odd_lru, seq_lth, seq_htl) is even CIC numbers, most recently used
hunting_policy => odd_lru
; Incoming calls are placed in the ss7 context in the asterisk dialplan
context => ss7
; The language for this context is da
language => da
; The value and action for t35. Value is in msec, action is either st or timeout
; If you use overlapped dialling dial plan, you might choose: t35 => 4000,st
t35 => 15000,timeout
; The subservice field: national (8), international (0), auto or decimal/hex value
; The auto means that the subservice is obtained from first received SLTM
subservice => auto
[link-l1]
linkset => siuc
channels => 1-15,17-31
schannel => 16
firstcic => 1
enabled => yes
[link-l2]
linkset => siuc
channels => 1-15,17-31
schannel => 16
firstcic => 33
enabled => yes
[link-l3]
linkset => siuc
channels => 1-31
schannel =>
firstcic => 65
enabled => yes
[link-l4]
linkset => siuc
channels => 1-31
schannel =>
firstcic => 97
enabled => yes
; Echo cancellation
; echocancel can be one of: no, 31speech (enable only when transmission medium is 3.1Khz speech), always
echocancel => no
; echocan_train specifies training period, between 10 to 100 msec
echocan_train => 350
; echocan_taps specifies number of taps, 32, 64, 128 or 256
echocan_taps => 128
[host-localhost.localdomain]
; chan_ss7 auto-configures by matching the machines host name with the host-
; section in the configuration file, in this case ‘gentoo1’. The same
; configuration file can thus be used on several hosts.
; The host is enabled
enabled => yes
; The point code for this SS7 signalling point is 0x8e0
opc => 13000
; The destination point (peer) code is 0x3fff for linkset siuc
dpc => siuc:10045
; Syntax: links => link-name:digium-connector-no
; The links on the host is ‘l1’, connected to span/connector #1
links => l1:1,l2:2,l3:3,l4:4
if-1 => 127.0.0.1
Messages********************************************************************
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP2 CRC error (CRC=0xebd != 0xf0b8) on link ‘l2’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP2 CRC error (CRC=0x39c3 != 0xf0b8) on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: Short MTP2 frame len 3 < 5 on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: Short MTP2 frame len 3 < 5 on link ‘l2’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: Short MTP2 frame len 3 < 5 on link ‘l2’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP2 CRC error (CRC=0x5fd9 != 0xf0b8) on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP2 CRC error (CRC=0x39c3 != 0xf0b8) on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP2 CRC error (CRC=0xebd != 0xf0b8) on link ‘l2’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: Short MTP2 frame len 3 < 5 on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: Short MTP2 frame len 3 < 5 on link ‘l2’.
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22184] mtp.c: Got status indication ‘OS’ while INSERVICE.
Dec 28 18:16:24 WARNING[22184] chan_ss7.c: MTP is now DOWN on link ‘l1’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP changeover last_ack=3, last_sent=3, from schannel 16, no INSERVICE schannel found
Dec 28 18:16:24 NOTICE[22184] mtp.c: Failover not possible, no other signalling link and no other host available.
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22184] mtp.c: Got status indication ‘OS’ while INSERVICE.
Dec 28 18:16:24 WARNING[22184] chan_ss7.c: MTP is now DOWN on link ‘l2’.
Dec 28 18:16:24 NOTICE[22184] mtp.c: MTP changeover last_ack=114, last_sent=114, from schannel 16, no INSERVICE schannel found
Dec 28 18:16:24 NOTICE[22184] mtp.c: Failover not possible, no other signalling link and no other host available.
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:24 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 WARNING[22539] chan_ss7.c: Audio buffer underrun, data 20 msecs, real time: 140028 msecs!
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 WARNING[22539] chan_ss7.c: Audio buffer underrun, data 20 msecs, real time: 139685 msecs!
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:25 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 WARNING[22539] chan_ss7.c: Audio buffer underrun, data 20 msecs, real time: 140443 msecs!
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:27 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:32 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:32 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:32 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:32 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 WARNING[22539] chan_ss7.c: Audio buffer underrun, data 20 msecs, real time: 239964 msecs!
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 WARNING[22184] chan_ss7.c: MTP is now UP on link ‘l2’.
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 WARNING[22184] chan_ss7.c: MTP is now UP on link ‘l1’.
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).
Dec 28 18:16:33 NOTICE[22539] chan_ss7.c: Short read on CIC=102 (read only 0 of 160).