Option Set 4-Synchronous Leased Line Applications With Dial Restoral (Models 3261/63/66/68); 326Xfast-Sdc Modem Application Examples - Motorola 326X V.34 User Manual

Option Set 4—Synchronous Leased Line Applications with
Dial Restoral (Models 3261/63/66/68)
Changing Default Configuration Settings
Depending on application requirements, you may change the following options:

326XFAST-SDC Modem Application Examples

This section provides application examples for each SDC option set, and notes
options you may need to change from factory default settings for each option set.
This section includes the following:
4-22 Configuring the Modem
• The default Restoral setting in Option Set 4 (leased line models) is Auto/FP.
When first configuring the modem, set Restoral=Off. This prevents erroneous
status errors from displaying while you configure leased line options. After
configuration, if your application requires automatic initiation of dial restoral,
set Restoral=Auto/FP.
• When installing the modem in a leased line application, the default Mode
setting (AT * CA, MODULATION OPTS category) is Answer. For proper
operation, you must set Mode=Answer in one modem, and
Mode=Originate in the other modem.
• Depending on application requirements, you may change the following:
— Line (MODULATION OPTS). Default option is 2W Lease. Can also be
set for 4W Lease application.
— No ACU Form (ACU OPTS). Default option is Sync. Can be set to
Async.
— Answer (ACU OPTS). Default option is country-specific. Refer to
Appendix C to verify that this option is appropriate for your application.
— Restoral (RESTORAL OPTS). Default option is Auto/FP (as described
above). Can be set to Off to disable restoral.
— Clock (MODULATION OPTS). Default option is Internal. Can be set
to external or loopback, depending on the network clocking source.
— DTE (TERMINAL OPTS). If No ACU Form=Async, customize your
DTE port by selecting these options:
Set the modem's DTE rate to match the asynchronous DTE's rate using
DTE Rate (AT
*
Set the modem's parity to match the parity set in the asynchronous DTE
using Parity (AT
Set the modem's character length to match the character length set in the
asynchronous DTE, using Char Length ACU OPTS category)
(Refer to Appendix A for parameter and setting descriptions.)
• SDC Pre-Operation Notes—read this before configuring the modem
DE, TERMINAL OPTS category).
* RP, ACU OPTS category).