Paradyne COMSPHERE 3610 Operator's Manual page 173

TDM/MCMP Port (MUX Funct: TDM or MCMP) Configuration Options*
Overspeed: 2.5
Next 1.25 2.5
Overspeed . Selects the overspeed range of the asynchronous-to-synchronous converter. This configuration
option displays only when TDM mode is selected.
1.25 — Selects the basic overspeed range. Basic range provides 1.25 % overspeed in the DTE
asynchronous data rate.
2.5 — Selects the overspeed percentage for extended range. Extended range provides 2.5 %
overspeed in the DTE asynchronous data rate.
RTS Cntrl: DTE
Next FrcOn DTE
Request-to-Send Control . Controls the behavior of the internal RTS lead.
FrcOn — DSU keeps the internal RTS ON continuously. Any data appearing on the transmitted data
(TXD) lead from the DTE is transmitted immediately. Choose this configuration value for
constant-carrier operation. (Refer to configuration option Transmitter Carrier Select that follows
for a description of constant-carrier operation.)
DSU turns ON RTS when the external RTS is turned ON. CTS is turned ON or Off by the
DTE —
external control signal RTS. Choose this configuration value for switched-carrier operation.
(Refer to configuration option Transmitter Carrier Select that follows for a description of
switched-carrier operation.)
TxCarrSel: Const
Next Const Cntrl
Transmitter Carrier Select .
operation (using the V.13 codes) on an individual channel. The simulated switched-carrier operation is also
referred to as pseudo-controlled carrier (PCC) mode. It is required for applications where the receiving DTE
expects a raised LSD lead prior to receiving data.
Const — Transmit Constant Carrier (constant-carrier operation). The V.13 codes are not sent. The
corresponding remote TDM or MCMP port must be configured for Receiver Constant Carrier or
Mark (RxCarrSel set to Const or Mark). Configure each port in a digital-sharing group for
Constant Carrier operation (TxCarrSel set to Const).
Cntrl — Transmit Controlled Carrier (switched-carrier operation, PCC mode). The DSU transmits the
V.13 codes over the DDS line when the port RTS changes state. When RTS is turned ON, the
DSU transmits a code that turns ON LSD at the remote TDM or MCMP port before CTS is
turned ON at the local TDM or MCMP port. When RTS is dropped, the DSU sends a code that
turns Off LSD at the remote TDM or MCMP port. The corresponding remote TDM or MCMP
port must be configured for Receiver Controlled Carrier (RxCarrSel set to Cntrl). This selection
is not valid if the DSU is part of a Digital-Sharing Device (DSD) group. (See the Mark selection
in the configuration option Receiver Carrier Select.)
NOTE: A port may be configured for switched-carrier operation in one direction and constant-carrier
operation in the other direction.
1
For MCMP mode, this configuration option is ignored except during dial backup when the MCMP Bckup
configuration option is set to TDM or a V.32 DBM is installed.
* The menu paths for Port 1 through Port 6 are identical.
3610-A2-GB91-90
Table 6-12
(2 of 5)
Prev
Prev
Prev
1
Enables the TDM or MCMP transmitter circuitry to simulate switched-carrier
July 1999
Configuration Options
6-45