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Unknown 31 displayed on handsets

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Bucky101

IS-IT--Management
Feb 9, 2006
419
AU
Gday,
I have 2 BCM 4.0's each connect to network via a Primary Rate. They are also connected to each other Via a text book QSIG setup so it looks like this.

PRI-----BCM1-QSIG(network)---------QSIG(slave)-BCM2------PRI

QSIG seems to work well only thing is BCM2 keeps getting 'Unkown 31' displayed on the handsets followed by the call dropping out. Over a few hours, more and more 'unknown 31's' will occur until BCM2 will need to be be powercycled to be fixed. Then, after few days of the system working perfectly this loop will happen again. Im not sure what this problem could be, I cannot find any reference to 'unknown 31'
 
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