C. Configuration Options
3160-A2-GB21-90 February 2001 C-3
Port Configuration Options
Extrn DLB: Disab
Next Enab Disab Prev
DTE Loopback on External Contact. Allows the control of a DTE Loopback (DLB) by an
external contact on the DTE Drop/Insert (DSX-1) interface.
Enab – Allows the DSU/CSU to begin a DLB when the external contact is closed. The
DSU/CSU remains in DLB as long as the contact remains closed.
Disab – Prevents the state of the external contact from affecting the operation of DLB.
Send Ones: Enab
Next Enab Disab Prev
Send All Ones on DTE Failure. Specifies the action to take on the signal transmitt ed to the
network when a valid signal cannot be recovered from the DTE Drop/Insert (DSX-1)
interface (due to an LOS, OOF, or AIS condition).
Enab – Sends all ones on the DS0 channels allocated to the network interface when an
LOS, AIS, or OOF condition occurs on the DTE Drop/Insert (DSX-1) interface.
Disab – Passes the data unchanged to the network interface channels.

Table C-1. DTE Interface Configuration Options (2 of 2)

Table C-2. Port Configuration Options (1 of 5)

Port Type: E530 (Factory 1) V.35 (Factory 2)
Next E530 V.35 RS449 X.21 Prev
Data Port Type. Allows selection of the data port interface type.
E530 – Configures the port as an EIA-530-A compatible interface. EIA-530-A DTEs can
be directly connected to a port connector on the back of the DSU/CSU.
V.35 – Configures the port as a V.35 compati b le interface. V.35 DTEs can be connecte d to
a port connector using an EIA-530-A-to-V.35 adapter.
RS449 – Configures the port as an RS-449 compatible interface. RS-449 DTEs can be
connected to a port connector using an EIA-530-A-to-RS-449 adapter.
X.21 – Configures the port as an X.21 compatible interface. X.21 DTEs can be connected
to a port connector using an EIA-530-A-to-X.21 adapter.
NOTE: If this configuration option is set to X.21, set the All Ones configurati on option to
RTS or Disab.
Base Rate: Nx64
Next Nx64 Nx56 Prev
Data Port Base Rate. Allows selection of the base rate for the data port. The data rate for
the port is a multiple (from 1to 24) of the base rate specified with this configuration option.
Nx64 – Sets the base rate for this port to 64 kbps. The data rate is
N
x64 kbps, where
N
is
a number from 1 to 24.
Nx56 – Sets the base rate for this port to 56 kbps. The data rate is
N
x56 kbps, where
N
is
a number from 1 to 24.