ADTRAN Express 5210, User Manual

Page: 100 / 203

Chapter 8. Voice Configuration
8-2 Express 5210 User Manual 61200208L1-1
Switched Mode
S
WITCHED
mode is used to multiplex several remote extensions (up
to 40) to two host ports. This enables many remote users to have
access to a limited number of access lines on a call-by-call basis.
The host unit typically connects two extensions to a PBX via an
FXO module. The remote units connect to telephone sets via FXS
modules. See the section Switched Mode Application on page 5-9 for
an example application.
Direct Mode
D
IRECT
mode is used to accomplish a one-to-one mapping of ports
across a frame relay network. In this mode, L1 and L2 on the local
unit are connected to L1 and L2 on the remote unit. With this
option, one or two extensions can be extended across the frame
relay or DDS network by using an FXO module on the local unit
and an FXS module on the remote unit. PLAR circuits are also
supported by using FXS modules on both ends of the circuit.
Related application examples are given on pages 5-12 and 5-13.
Remote/Host (Rem/Host)
Configure the unit to be either a R
EMOTE
unit or a H
OST
unit. There
must be only one H
OST
unit in a switched environment. Typically,
the H
OST
unit connects to the PBX via FXO connections. The H
OST
unit maintains all of the extension/DLCI information. All units
other than the
H
OST
are set up as R
EMOTE
units. No DLCI or
extension configuration is required for R
EMOTE
units.
DLCI Mapping (DLCI MAP)
The options for DLCI M
AP
vary depending on the M
ODE
and
R
EMOTE
/H
OST
selections.
This option is available only when the M
ODE
is set for S
WITCHED
.