User`s guide

Allworx Server Administrator’s Guide Version 7.6
Page 118 1-866-ALLWORX * 585-421-3850
www.allworx.com
Revised: 11/22/13
Channel Assignments
On a Digital Line, specify the preferred operating mode for each time
slot per the provisioning defined by the service provider or the device
connected at the other end of the Digital Line. If the proper selections
are not made, improper operation will result. Currently the following
modes are supported:
• Disabled – Indicates an unused time slot on this Digital Line.
• PRI B Channel – A bearer channel for ISDN PRI operation used for
carrying voice calls. Specifying this mode, in effect, defines a new
outside line for the PBX for each slot configured in this mode.
• PRI D Channel – A data-signaling channel for ISDN PRI operation
used for transporting call control information between the PBX and the
Central Office. The Allworx server always operates as user equipment
on a PRI line. If enabling PRI operation on this line, configure exactly
one slot as the PRI D channel. Typically, this is slot 24. When using
NFAS, the D channel must be on the T1-A port.
• T1 E and M Immediate Start RBS - A circuit switched Ear and Mouth
mode Robbed Bit Signaling trunk that uses Immediate Start signaling.
Specifying this mode defines a new outside line for the PBX for each
slot configured in this mode. This mode is symmetrical and used to
hook the PBX back to back to tie PBXs between sites on a leased line.
• 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 also used to hook PBXs back-to-back to tie
PBXs between sites on a leased line. Only use DTMF signaling. The
system does not support Multiple Frequency (MF) signaling.
• 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 also used to hook PBXs back-to-back to tie
PBXs between sites on a leased line. Only use DTMF signaling. The
system does not support Multiple Frequency (MF) signaling.
Parameter Description