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WCM1100 / WCM3100 / WCM-Serial / LHM1000 / LVM2000 User Manual
76-02-082 Rev N
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DS-3 G.703 C-Bit Framed (WCM3100)
OFF
E1/E3/DS-3 G.703 Unframed
This bit switch is unused on the WCM-Serial or LHM1000 which do not offer framed
modes.
For LVM2000 this bit switch determines the polarity of the Resync control signal.
ON
Active Low
OFF
Active High
2.2.6.5 Bit switch 5, Timing Mode/Resync
This bit switch determines the timing source for the PDH WAN interface
ON
Internal Timing
OFF
Loop Timing
Note, it is vital that one end of PDH WAN link is set to internal, as loop/loop will give an
unstable system.
This bit switch is unused on the WCM-Serial; where timing is defined by the auto sensing
cable type used; or LHM1000 where DTE mode is used.
For LVM2000 this bit switch determines the signal levels of the Resync control signal.
ON
LVDS
OFF
TTL
2.2.6.6 Bit switch 6, Interface Mode
This bit switch selects between the two optional interface modes,
For WCM1100, E1 Interface
ON
BNC, Unbalanced 75Ohm
OFF
RJ45, Balanced 120Ohm
For WCM3100,
ON
E3 G.703