User guide

System Administrator’s Guide – Release 7.5
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Revised: April 9, 2013
Page 117
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 connects 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. Use this
when clear channel data service is available. Do not select
this mode if the Digital Line’s AMI Line Code mode is
selected.