GAI-Tronics LE200-RM Rack-Mount Page/Party Line Extender - Manual (Page 58)

Pub. 42004-392G
M ODEL LE200-RM R ACK -M OUNT P AGE /P ARTY
®
L INE E XTENDER P AGE 56 of 56
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Frequently Asked Questions
Q: Why does it take so long for the propagation of off-hook to on-hook transitions?
A: The line balance ac coupling capacitors take some time to charge. Also, the delay helps to prevent
audio from looking like an on-hook condition.
Q: Why does it take so long for the propagation of the page line ground fault transitions?
A: If the delay was not there, then page line audio might appear to be a ground fault.
Q: Why is shielded cable specified for the LVDS cable?
A: To improve the link’s noise immunity. Most likely, the clock signal that controls one of the LE200-
RM s passes over the LVDS cable.
Q: Is the LE200-RM compatible with the public switched telephone network?
A: No.
Q: Does the LE200-RM have on-board primary protection for the T1/E1 cable?
A: No.
Q: Why is the LE200-RM not compatible with the public switched telephone network?
A: (1) It is not approved for such use. (2) At a minimum, it does not support the facility data link
transmission required for such use.
Q: Can I connect a Model LE300 to an LE200-RM?
A. Yes, these units are electrically compatible, only mechanical changes were made between the LE200
and LE300.
Q: Can I connect a Model LE300-MM or a Model LE300-SM to a LE200-RM
A. Yes. However an optional fiber optic transceiver will be required.
Q: Can I connect a Model LE200-RM to an LE100?
A: No, the T1 connection cannot be used to connect an LE200-RM to an LE100. However, an analog
connection can be used, i.e., an LE200-RM and an LE100 can both connect to the same system cable.
Q: Can I have Model LE300, LE200 and LE100 Line Extenders in the same system?
A.: Yes, but the LE100s must be connected only to other LE100s and the LE300s and L200s must be
connected together. Remember that the LE200 & LE300 fiber optic versions are NOT compatible
Q: What happens if the line balance is not installed?
A: A loud oscillation is heard on the audio line.