Telenetics V.34-SDC, 326X V.34 manual Buffers, Netwrk Comp, View Phone #, Ext Cntrl, Ext Select

Table A-1.

AT Commands, Cross-Referenced to Front Panel Options (Continued)

AT	Parameter &
Command	Option	Description
AT*MX13	=28.8	(V.34 modems only)
AT*MX14	=31.2	(V.34 modems only)
AT*MX15	=33.6	(V.34 modems only) (default)
	Buffers	Buffer Option
		Lets you specify whether normal or reduced size buffers store data received from a local DTE.
		Use this parameter if you have DTE-to-DTE flow control enabled, to reduce the amount of data
		sent to the remote DTE when a flow-off condition is received at the local DTE.
AT*NB0	=Regular	Normal capacity buffers are used.
AT*NB1	=Reduced	Reduced sized buffers are used allowing less data to accumulate in the modem.
		When the SDC modem is operating in synchronous reliable mode, selecting Buffers=Reduced
		reduces throughput delay while transmitting data.
	Netwrk Comp	Network Compensation
		Lets you enhance modem performance reliability when operating with network equipment.
AT*NC0	=Off	Off should be selected when making most normal connections within a continent.
AT*NC1	=Lvl1	Select Lvl1 if the modem is experiencing performance problems when connected to a line
		terminating equipment via a short loop, having low loop loss with below normal receive signal
		levels (for example, when operating behind a low grade PBX). NOTE: This option limits the
		maximum DCE data rate to 21,600 bps.
AT*NC2	=Lvl2	Lvl2 is recommended when performance problems are encountered making intercontinental
		calls. NOTE: This selection limits the maximum DCE data rate to 19,200 bps.
		When operating in an environment where the conditions described for Lvl1 and Lvl2 exist,
		Lvl2 is recommended to enhance performance.
AT*ND	View Phone #	View Stored Telephone Numbers
	=n	Lets you view the telephone numbers stored in the modem’s nine telephone book addresses.
		Enter AT*ND<CR>
	Ext Cntrl	External Control
		Lets you select which pin the AT*OP (Ext Select) command responds to. NOTE: If AT*OP
		is set to 0, this command has no effect.
AT*OC0	=Pin 14	Loads an option set based on the transition of Pin 14. This setting overrides the AT *RE
		(Restore) command setting FP/116 or FP/116.ACU.
AT*OC1	=Pin 20	Loads an option set based on the transition of Pin 20. When using this setting, set the AT&D
		(DTR) command to High. This setting overrides theAT *RE (Restore) command settings FP/
		108.1 and FP/108.ACU and all AT&D (DTR) command settings except High.
	Ext Select	External Option Set Select (also known as 116 Select)
		Controls how the modem uses an external pin to select option sets. The pin used is defined by
AT*OP0		the AT*OC (Ext Cntrl) command.
	=Off	The AT*OP command is disabled.
AT*OP1	=1H/2L	There are 12 settings with the format nH-mL, where n=1, 2, 3, or 4, and m=1, 2, 3, or 4. When
		the pin specified by the Ext Cntrl option (14 or 20) transitions from low to high, the modem
		loads the “H” option set. When the pin specified by the Ext Cntrl option (14 or 20) transitions
		from high to low, the modem loads the “L” option set.

AT*OP2 =1H/3L

AT*OP3 =1H/4L

Gray shading indicates country-specific options. See Appendix C for your country’s options.

Configuration

Quick-Reference

Configuration Quick Reference A-25