User`s guide

System Administrator’s Guide – Release 7.2.3.x
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Revised: September 1, 2010
Page 63
T1 E and M Wink FG-B RBS
– A circuit-switched Ear and Mouth mode Robbed Bit Signaling trunk.
Specifying this mode defines a new outside line for the PBX for each slot configured in this mode. This
mode is symmetrical and can be used to hook PBXs back-to-back to tie PBXs between sites on a
leased line. Only DTMF signaling is used. Multiple Frequency (MF) signaling is not supported.
T1 E and M Wink FG-D RBS
– A circuit-switched Ear and Mouth mode Robbed Bit Signaling trunk.
Specifying this mode defines a new outside line for the PBX for each slot configured in this mode. This
mode is symmetrical and can be used to hook PBXs back-to-back to tie PBXs between sites on a
leased line. Only DTMF signaling is used. Multiple Frequency (MF) signaling is not supported.
T1 FXO Loop-Start RBS
– A circuit switched Foreign Exchange Office style interface mode that digitally
emulates the standard analog telephone line interface that uses Loop-Start signaling. Specifying this
mode, in effect, defines a new outside line for the PBX for each slot configured in this mode. If call
volume is high, this mode is less desirable than FXO Ground-Start Operation. This is intended to
connect to the service provider interface that is operating as the FXS side of the interface. This mode is
NOT symmetrical.
T1 FXO Ground-Start RBS
– A circuit switched Foreign Exchange Office style interface mode that digitally
emulates the standard analog telephone line interface using Ground-Start Signaling. Specifying this
mode, in effect, defines a new outside line for the PBX for each slot configured in this mode. The
Ground-Start operation is able to minimize the possibility of glare especially when call volumes are
high, making it more preferable than Loop-Start. This is intended to connect to the service provider
interface that is operating as the FXS side of the Ground-Start interface. This mode is NOT
symmetrical.
56K Data Channel
– Specifies that 56Kbits/sec of bandwidth is provided by this slot for the Digital Line’s
logical data connection. This mode is typically only used if 64K clear channel service is not available.
This is the only mode that should be used for data connections when AMI Line Code mode is selected.
64K Data Channel
– Specifies that 64Kbits/sec of bandwidth is provided by this slot for the Digital Line’s
logical data connection. This is used when clear channel data service is available. This mode must not
be selected if the Digital Line’s AMI Line Code mode is selected.