Paradyne COMSPHERE 3920PLUS Technical Reference Manual page 94

Configure Branch
Table 5-1
(8 of 9)
DTE Interface Configuration Options — Multiport Mode l
XTXC Clamps TXC: Enable
Nxt Enable Disable
This configuration option only appears when the TX Clock Source or Bakup_TXClk_Src configuration option is
set to Port 1, 2, 3, or 4 and Async/Sync mode is Sync.
External Transmit Clock Clamps Transmit Clock. Allows the port's TXC output (Pin 15 on the EIA-232-D interface) to be
clamped OFF when TX Clock Source is configured for Port 1, 2, 3, or 4.
Enable – TXC is clamped OFF when TX Clock Source is configured for Port 1, 2, 3, or 4.
Disable – TXC continues to be provided when TX Clock Source is configured for Port 1, 2, 3, or 4.
CT111 Control: Disable
Nxt Disable Enable
This configuration option does not appear when V.34 is enabled for a leased or dial line.
CT111 Control. Used in conjunction with CT111 Rate Control. (Refer to the MUX Sub-Group section of this table.) Allows
the DTE to control modem rate via Pin 23 of the EIA-232-D interface. CT111 is also known as CH on the EIA-232-D
interface.
Enable – The DTE's CT111 signal may be used in conjunction with CT111 Rate Control (refer to the MUX Sub-Group
section of this table) to control modem rate.
Disable – Disregards the DTE's CT111 signal.
Rcv Remote Loop: Enable
Nxt Enable Disable
Receive Remote Loopback Response. Determines if the modem responds to a request for a remote loopback issued
from a remote modem.
DTE RL (CT140): Disable
Nxt Disable Enable
DTE Remote Loopback. Controls the use of Pin 21 of the EIA-232-D/ITU-T V.24 interface by the DTE to initiate a remote
loopback. An Abort command or test time-out ends this test.
Enable – The DTE forces the modem into remote loopback when the signal on Pin 21 (CT140) is turned ON. Remote
Loop ends when the signal is dropped.
Disable – The DTE does not initiate remote loopback in response to the signal on Pin 21.
DTE LL (CT141): Disable
Nxt Disable Enable
DTE Local Loopback. Controls the use of Pin 18 of the EIA-232-D/ITU-T V.24 interface by the DTE to initiate a local
loopback. An Abort command or test time-out ends this test.
Enable – The DTE forces the modem into local loopback when the signal on Pin 18 (CT141) is turned ON. Local
loopback ends when the signal is dropped.
Disable – The DTE will not initiate local loopback in response to the signal on Pin 18.
3920-A2-GH30-40 October 1998 5-17