
342-86400-445PS
Issue
4.0
October
2006
Page
32
Copyright
GE Multilin Inc. 2002
Note
: This field must be set to 'None' when not being used for test
or maintenance purposes.
Transmit Signalling
Allows the user to set a specific signaling condition that will be sent
to the far-end unit and is used for test/maintenance purposes only.
The signaling options available depend on the
Signalling Type
selected (see
Signalling Setup
window).
Note
: This field must be set to ‘-‘ when not being used for test or
maintenance purposes.
Note
: When testing from near end to far end, the far-end unit
Receive Signalling should be configured to '-'.
Note
: The unit's yellow (BUSY) LED illuminates only if an OFF-
HOOK condition is initiated from an external source (i.e. signaling
test set or telephone).
Note:
The signaling information is mapped into two bits of the
PSFR byte (part of VT1.5 frame). There are four possible transmit
signaling combinations that can be addressed by these bits: 00, 01,
10, and 11 and some of them are not used. When an Invalid
signaling condition (combination of the two bits) is selected, the unit
will send the selected combination even though it does not apply to
any valid signaling condition for the Signalling Type chosen.
Receive Signalling
Allows the user to set a specific signaling condition that will be sent
to the local drop equipment and is used for test/maintenance
purposes only. The options available depend on the
Signalling
Type
selected (see
Signalling Setup
window).
Note
: This field must be set to ‘-‘ when not being used for test or
maintenance purposes.
Talk Battery and Ringing Generator
Source
Displays "Internal".
Voltage
Selectable for -28 or -56 V. This is the talk battery voltage that this
unit's sub-board will provide to the line (if installed).
Note
: On units configured for 600
Ω
resistive only, it is
recommended that -56 VDC not be used.