[asterisk-ss7] has anyone connected chan_ss7 with Siemens V16?

[umar tarar]

hi Goke, Peter & the list

okay here is the situation where i am stuck now in connecting chan_ss7 with
a Siemens EWSD V12 switch, all i need is to receive calls on my asterisk
server & then to SIP channels as in an ACD system.
When ever we place a call from PSTN, the other end (EWSD) sends the call to
our server, our Asterisk server receives the IAM for that call (u can see
the log below, the IAM for a call on CIC=3) but simply discards it as shown
in the log, & upon the call termination from the caller, the other end sends
an REL message but again our server after receving it, simply discards it.
We even saw it from the traces we had through a Siemens tracer i.e. our
server is not sending back the acknowledgements & etc. In short, our
Asterisk server detects the ativities upon an incomming call, but is unable
to receive it, discards every received message :(   , the CLI log is as
under:

*****************************
Dec 16 01:10:16 ERROR[4904]: mtp.c:765 timeout_sltm_t1: No SLTA received
within Q.707 timer T1, faulting link on link 'l1'.
Dec 16 01:10:16 WARNING[4904]: chan_ss7.c:3598 monitor_main: MTP is now DOWN
on link 'l1'.
Dec 16 01:10:16 NOTICE[4904]: mtp.c:471 mtp_changeover: MTP changeover
last_ack=3, last_sent=3, from schannel 16, no INSERVICE schannel found
Dec 16 01:10:16 NOTICE[4904]: mtp.c:475 mtp_changeover: Failover not
possible, no other signalling link and no other host available.
Dec 16 01:10:25 NOTICE[4904]: isup.c:489 decode_isup_phonenum: National
(significant) or unknown nature of address indicator (1), assuming
international.
Dec 16 01:10:25 WARNING[4904]: chan_ss7.c:2291 process_circuit_message:
Group reset still in progress for CIC=3, typ=IAM message discarded.
Dec 16 01:10:27 WARNING[4904]: mtp.c:760 timeout_sltm_t1: No SLTA received
within Q.707 timer T1, trying again on link 'l1'.
Dec 16 01:10:35 WARNING[4904]: chan_ss7.c:2291 process_circuit_message:
Group reset still in progress for CIC=3, typ=REL message discarded.
Dec 16 01:10:36 ERROR[4904]: mtp.c:765 timeout_sltm_t1: No SLTA received
within Q.707 timer T1, faulting link on link 'l1'.
Dec 16 01:10:36 WARNING[4904]: chan_ss7.c:3598 monitor_main: MTP is now DOWN
on link 'l1'.
********************************
as you ppl can see the log lines on Dec 16 01:10:25 and Dec 16 01:10:35,
first an IAM comes then the SLTA warning  & then the REL but both the
messages have been discarded, in the IAM line it says that 'Group reset
still in progress for CIC=3', what actually does that mean? & what do i need
to do for it?
moreover the other relvent info:

********************************
*CLI>ss7 link status:
linkset siuc, link l1, schannel 16, INSERVICE, rx: 0, tx: 3/3,
sentseq/lastack: 2/2, total   3368272,   3368336
********************************
********************************
*CLI> ss7 linestat
Linkset: siuc
CIC   1 Idle Reset pending  BLOCKED Link down
CIC   2 Idle Reset pending  BLOCKED Link down
CIC   3 Idle Reset pending  BLOCKED Link down
CIC   4 Idle Reset pending  BLOCKED Link down
CIC   5 Idle Reset pending  BLOCKED Link down
CIC   6 Idle Reset pending  BLOCKED Link down
CIC   7 Idle Reset pending  BLOCKED Link down
CIC   8 Idle Reset pending  BLOCKED Link down
CIC   9 Idle Reset pending  BLOCKED Link down
CIC  10 Idle Reset pending  BLOCKED Link down
CIC  11 Idle Reset pending  BLOCKED Link down
CIC  12 Idle Reset pending  BLOCKED Link down
CIC  13 Idle Reset pending  BLOCKED Link down
CIC  14 Idle Reset pending  BLOCKED Link down
CIC  15 Idle Reset pending  BLOCKED Link down
********************************
my conf files are as:
-----ss7.conf------
[linkset-siuc]
enabled => yes
enable_st => yes
use_connect => no
hunting_policy => odd_lru
context => ss7
subservice => auto

[link-l1]
enabled => yes
linkset => siuc
channels => 1-15,17-31
schannel => 16
firstcic => 1
echocancel => allways
echocan_train => 350
echocan_taps => 32

[host-ACDsvr.case]
enabled => yes
default_linkset => siuc
opc => 5462
dpc => siuc:5461

links => l1:1
-----------------------

---zaptel.conf----
span=1,1,0,ccs,hdb3,crc4
bchan=1-31
loadzone=uk
defaultzone=uk
-----------------------

---extensions.conf---
[general]
static=yes
writeprotect=no
autofallthrough=no

[ss7]
exten => _. , 1 , Answer()
exten => _. , 2 , Ringing()
exten => _. , 3 , Wait(2)
exten => _. , 4 , Playback(your-temp-greeting)
exten => _. , 5 , Queue(17)
exten => _. , 6 , HangUp()
.
.
.
-----------------------------

the packages i m using:
LINUX FC-4 (kernal 2.6)
Asterisk-1.2.12.1
zaptel-1.2.10
chan_ss7-0.8.4

then i installed chan_ss7-0.9, which besides the above also gave this:
********************************
in chan_ss7-0.9
Dec 16 01:49:44 WARNING[5601]: chan_ss7.c:1022 t18_timeout: T18 timeout (No
"circuit group blocking acknowledge" from peer) CIC=1.
********************************

the chan_ss7 works all fine upto MTP-3 (as it identifies the IAM & REL & CGU
etc) but after receiving IAM it discards it i.e. no ACM or ANM back to (i
even checked with use_connect=yes, but to no use) the other end. So in your
opinion, what am i supposed to do, should I go for RBT(Ringback tone) patch
or should i place the wait(2) prior Answer or yet it has nothing to with
extensions.conf or what?
plz help me connecting chan_ss7(on Digium TE411P) with Seimens EWSD V12,
things seem to be very close to working but they r not workin infact & i m
running outta time

regards
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