[asterisk-ss7] Chan_ss7 mtp2 Frame Error

[Hector Gonzalez]

Trying to bring up an ss7 link with an Erricson switch using a Digium Te121 card.  Channel 16 the signaling channel seems to be putting out trash possibly the mtp2 bad frame being reported. Here are the current configurations.
 
Zaptel.conf
(have tried the signaling channel dchan=16 and mtp2=16)
 
# Span 1: WCT1/0 "Wildcard TE121 Card 0" (MASTER) HDB3/CCS/CRC4
span=1,1,0,ccs,hdb3,crc4
# termtype: te
bchan=1-15,17-31
mtp2=16
[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 => no
 
; Reply incoming call with CON rather than ACM and ANM
use_connect => no
 
; The CIC hunting policy (even_mru, odd_lru, seq_lth, seq_htl) is even CIC numbers, most recently used
hunting_policy => even_mru
 
; Incoming calls are placed in the ss7 context in the asterisk dialplan
context => ss7
 
; The language for this context is da
language => us
 
; 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 => 0
 
 
; The host running the mtp3 service
; mtp3server => localhost
 
[link-l1]
 
; This link belongs to linkset siuc
linkset => siuc
 
; The speech/audio circuit channels on this link
channels => 1-15,17-31
 
; The signalling channel
schannel => 16
; To use the remote mtp3 service, use 'schannel => remote,16'
 
; The first CIC
firstcic => 1
 
; The link is enabled
enabled => yes
 
; Echo cancellation
; echocancel can be one of: no, 31speech (enable only when transmission medium is 3.1Khz speech), allways
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-pbx.local]
; chan_ss7 auto-configures by matching the machines host name with the host-<name>
; 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 => 0x005a
 
; The destination point (peer) code is 0x3fff for linkset siuc
dpc => siuc:0x189d
 
; Syntax: links => link-name:digium-connector-no
; The links on the host is 'l1', connected to span/connector #1
links => l1:1
 
; The SCCP global title: translation-type, nature-of-address, numbering-plan, address
;globaltitle => 0x00, 0x04, 0x01, 4546931411
;ssn => 7
 
 
 
 
 [Oct 15 11:41:59] DEBUG[3855]: mtp.c:822 mtp2_bad_frame: MTP2 bitstream frame format error, entering octet counting mode on link 'l1'. Last raw bits': 35 c5 ff ff 01 03 bc d4 ff ff 01 00 27 e6 ff ff 01 02 35 c5 ff ff 01 03 bc d4 ff ff 01 
EL Boricua
Hector


      
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