[OPEN-ILS-DEV] Assistance request with a SIP connection problem

[Kivilahti Olli-Antti]

Hello Mr. Kurenniemi.

I think we could help you better if you described in more detail what you have tried so far.
How are you testing the connection?
Do you have a development Evergreen installation, where you can prod away freely?
If not, then it might be best to work together with the system administrators of your client.

I can assure you learning Evergreen is not the easiest of things. I cannot give you an estimate about SIP modifications, but our experience of a learning curve is atleast 1 month (>120h) before you start to be able to do some modifications. Presuming your focus is on the SIP aspect, things might be easier (~60h) as it is kind of a separate module and presumably you have a strong background with SIP and linux, and know a little Perl.
All my time estimates are WAG's and will vary!
Try googling "open-ils sip" and you get some nice results, such as:
http://www.open-ils.org/dokuwiki/doku.php?id=evergreen-admin:sip
but dokuwikis can easily be outdated.

If you don't feel like linux servers is your piece of cake, you could try contracting someone on this very list.

We here in Joensuu are yet to take a peek at Evergreen's SIP2 implementation, but are looking forward to cooperating with you.

Olli-Antti Kivilahti
Open Library 2014
Joensuu Regional Library

Date: Thu, 20 Jun 2013 06:19:43 +0000
From: Antti Kurenniemi <antti.kurenniemi at pv-supa.com>
Subject: [OPEN-ILS-DEV] Assistance request with a SIP connection
        problem
To: "open-ils-dev at list.georgialibraries.org"
        <open-ils-dev at list.georgialibraries.org>
Message-ID:
        <bb75624fd9b645fb9ddb87f89efe9536 at DB3PR01MB091.eurprd01.prod.exchangelabs.com>

Content-Type: text/plain; charset="us-ascii"

Hello all.


My name is Antti Kurenniemi, I work for P.V. Supa Oy Ltd (www.pv-supa.com<http://www.pv-supa.com>), a library automation company. We make self-service stations and sorters and the likes, and also the software to those. We are based in Finland (as am I), and have delivered sorters to the US for over a decade already.

For about a year now, we have seen our customers using Evergreen as their ILS. For the most part we have not had any problems, but right now we have one sorter installation in the US with a fairly annoying issue.

Our devices communicate with ILS's via SIP protocol (SIP 1 or 2, typically 2), normally over a TCP/IP connection. In this particular case, the SIP connection is broken quite often, about once or twice an hour. The network connection stays live, but the SIP connection just closes. It comes up automatically after a few minutes and our device can then continue normal operations, but obviously if a patron is using the machine when the connection breaks, they can't return their books.

I have between zero and zilch experience with Evergreen server, so I'm looking for help and advice as to where to start looking. We have logs in our device with timestamps, so if there is logging in the Evergreen server that we could compare these to, that would be a good place to start, right? Now if only I knew how to get to any logs... ;-)

So, any help and tips would be greatly appreciated.


With best regards,

Antti Kurenniemi
P.V. Supa Oy Ltd
antti.kurenniemi at pv-supa.com<mailto:antti.kurenniemi at pv-supa.com>