SoE Losing sight of ISDN2 2

[Chedzz]

I have a SoE (4+8+4-3Vc) running 4.1.9 with a Bri8 Card. Every few weeks it loses sight of the ISDN2e and all incoming get an engaged tone and outgoing get "waiting for line". After a reboot all is fine again until the next time.

Monitor hasn't revealed anything. SSA shows an alarm after the system restarts stating "8Khz clock source changed, previous was internal". My distributor suggested it could be down to a long line length and high decibel loss but I have checked with BT and the line is well within limits.

Just wondered if anyone has experienced this before and knew what was causing it before I go up there and change the Bri card.

Thanks

Chedzz

 

[mattKnight]

Known issue with BRI on 4.1.9

Upgrade to V4.1.12

Take Care

Matt
If at first you don't succeed, skydiving is not for you.

 

[Bas1234]

Upgrade to 4.1(12) there are some ISDN problems in the 4.1(9)

see bulletin;

http://support.avaya.com/elmodocs2/ip_office/tech/Global_IP_Office_Technical_Bulletin_Number_93.pdf

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It works! Now if only I could remember what I did...
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[Chedzz]

Just thought I'd post an update. Problem is now solved. The problem was a lack of system memory (SoE). The client uses LDAP to update the system directory and it was all too much for the poor little SoE. Turned LDAP off and no further problems.