CTI Products EXB Network Manager - Manual (Page 38)

Hot-Standby EXB / Network Manager Software Manual Network Manager
CTI Products, Inc. Program Operation
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68-11707-100
6.8.4 Remote Main EXB Failed
Figure 30 Remote Main EXB Failed
Since the loop is not complete, the Standby EXB turns on its network switch to
pass traffic over the Standby WAN line.
In this condition, the program can talk to the units as follows:
EXB Forward
(Clockwise) Reverse
(Counter-Clockwise)
Main (Central) Yes No
Standby (Central) No Yes
Remote Standby No Yes
Remote Main No No
Based upon this, the program determines that the Remote Main EXB unit is bad.
Other possible causes for this display could be:
1. No power to the Remote Main EXB module.
2. A bad Main WAN line AND a bad Remote tie line.
(Highly unlikely that two failures have occurred.)
However, the program flags these lines as questionable since it cannot
determine that they are good.