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Today's Topics:
1. RE: ISUP via Media Gateways: A project and possible bounty
(Leonti Dailis)
2. RE: RE: ISUP via Media Gateways: A project andpossible bounty
(Luciano Ramos)
3. Re: Some sessions hangs. Is it possible with SS7 (Storer, Darren)
4. Re: Some sessions hangs. Is it possible with SS7 (Anton)
----------------------------------------------------------------------
Message: 1
Date: Fri, 12 May 2006 12:38:13 -0700
From: Leonti Dailis <[EMAIL PROTECTED]>
Subject: [asterisk-ss7] RE: ISUP via Media Gateways: A project and
possible bounty
To: "'[email protected]'" <[email protected]>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
is that whether or not the SIP code within Asterisk can
handle 3rd part
call control; if this is the case, then life is much easier:
the Cisco
can be controlled as a UA, encapsulating the ISUP messages in SIP
envelops sent over to Asterisk.
I don't believe you can do it (use SIP-T encapsulation?) without using Cisco
PGW. The gateway can not process ISUP on its own. You will have to use
SIGTRAN.
Best regards,
Leonti Dailis
Principal Engineer
SS8 Networks, Inc.
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Message: 2
Date: Fri, 12 May 2006 17:54:39 -0300
From: "Luciano Ramos" <[EMAIL PROTECTED]>
Subject: RE: [asterisk-ss7] RE: ISUP via Media Gateways: A project
andpossible bounty
To: <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="us-ascii"
Also, you can't use SIP-T to interconnect the AS53xx to the Asterisk box,
basically because SIP-T doesn't carry all the information from the lower
layers of the SS7 Stacks (eg, CIC number, etc.. )
Luciano
_____
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Leonti Dailis
Sent: Viernes, 12 de Mayo de 2006 04:38 p.m.
To: '[email protected]'
Subject: [asterisk-ss7] RE: ISUP via Media Gateways: A project andpossible
bounty
is that whether or not the SIP code within Asterisk can
handle 3rd part
call control; if this is the case, then life is much easier:
the Cisco
can be controlled as a UA, encapsulating the ISUP messages in SIP
envelops sent over to Asterisk.
I don't believe you can do it (use SIP-T encapsulation?) without using Cisco
PGW. The gateway can not process ISUP on its own. You will have to use
SIGTRAN.
Best regards,
Leonti Dailis
Principal Engineer
SS8 Networks, Inc.
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Message: 3
Date: Sat, 13 May 2006 00:01:47 +0100
From: "Storer, Darren" <[EMAIL PROTECTED]>
Subject: Re: [asterisk-ss7] Some sessions hangs. Is it possible with
SS7
To: [email protected]
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Hi Anton,
the state of CICs can become unsynchronised between SS7 nodes although it
doesn't happen too often. Sometimes Node A thinks that a particular CIC is
"In Service Free" whilst Node B thinks that Node A didn't handle the last
call correctly and places the same CIC into a blocked state at a higher
application layer.
When this situation occurs we normally use MML to "flex" the CICs by
manually taking each suspect CIC out of service and then returning it back
to service. I have seen that chan_ss7 appears to support these maintenance
messages but I haven't used them myself.
When an SS7 node is started for the first time (cold start) it has no
knowledge of the state of the CICs as maintained by another SS7 node that it
is connected to. To synchronise the state of the CICs after a cold start it
is common to see many block and unblock messages (including Circuit Group
Resets) after the signalling links are aligned but before the route starts
to handle live traffic.
Regards
Darren
On 12/05/06, Anton <[EMAIL PROTECTED]> wrote:
Guys,
Does anyone know, if it is possible for timeslots to hang, with SS7
signalling?
For example if REL message is missing (did not received in time by
Asterisk) -
would the accured timeslot hang (be active on Asterisk side, but
released in the TELCO side?) I've strange issues with one of my telco's.
The sessions just timed out, and released by the Asterisk itself, since
there
is 3600s duration limit.
Any help is highly appreciated!
,"SS7/15","IAX2/axsoftsw1-16389","Hangup","","2006-04-21
23:04:54","2006-04-21 23:05:00","2006-04-22
00:04:59",3605,3599,"ANSWERED","DOCUMENTATION"
,"SS7/19","IAX2/axsoftsw1-16392","Hangup","","2006-04-21
23:05:23","2006-04-21 23:05:29","2006-04-22
00:05:28",3605,3599,"ANSWERED","DOCUMENTATION"
,"SS7/11","IAX2/axsoftsw1-16393","Hangup","","2006-04-21
23:46:00","2006-04-21 23:46:07","2006-04-22
00:46:07",3607,3600,"ANSWERED","DOCUMENTATION"
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