Quoting Antti Kurenniemi <[email protected]>:
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.
You should have the customer check the /var/log/syslog on their SIP2 server for error messages. The most relevant lines would likely contain the following text: read_SIP_packet (try [a number]) ERROR: If they don't find that in the logs, then more digging will be required. -- Jason Stephenson Assistant Director for Technology Services Merrimack Valley Library Consortium
