16 May 12 10:31
I looking for any thoughts on my problem, but first the long history.
Customer had originally a MICS with 2 DS cards, 2 port expansion card with 1 0x16 and 1 0x8 ATM. Installed by the telco with a CDA MICS XC 4.1 G00 which was a very buggy release. Calls drop, can't transfer calls etc. At some point I became involved and installed a CP150 it seems to work well. At some point they tell about the problems with call dropping and I find out about the buggy SW (10 years after it was installed).
Since then I have upgraded the customer to MICS XC 6.1 (30C0G05) with a Rls 2 sleeve. The situation improved greatly but some problems continued. Somewhere along the line I have replaced the KSU and line cards. They still have the original 2 port expansion card and 0x16. I disconnected the 0x8 ATM as it was not used. The problems continued. As the software upgrade was done as an upgrade, I went back and did a restart on the system and programed from scratch. Problems continue.
The telco have checked the lines? The biggest problem is that calls will drop while on hold and it happens on multiple lines. The receptionist has had the system put a call on hold when another line started to ring (very intermittent). They have 8 lines with line appearances on all sets (Approx. 40 sets). I would not have done it that way but they do not want to change. The majority of the telephones are original.
The current problem may not be related to the original SW problem.
Any thoughts would be welcome.