ZyXEL Communications omni.net LCD+M User Manual

Technical Reference for ZyXEL omni.net series

4-7

Placing a Data Call

While placing a voice call can be as simple as dialing out with your analog phone, initiating a data

call requires prior selection of a proper B-channel protocol. Here are some simple commands that

will be useful when placing a call. The omni.net has the capability to automatically detect the

B-channel protocol (V.120, X.75, or PPP) used by the answer site.

AT Command

Description

ATBnn

Changes ISDN B channel protocol setting.

ATDL

Re-dials the last dialed telephone number.

Table 24. AT Command for Placing a Data Call

Multi-Auto Dial Out (MDO) for Outgoing Data Calls

With the Multi-Auto Dial Out function, your omni.net automatically tries the outgoing data
protocol with the predefined protocol sequence set by the commands [ATB90-97], as listed in the
following table.

AT Command

MDO Protocol Trial Sequence

ATB90

PPP+X.75

ATB91

PPP+X.75+T.70+ISO8208+T.90+BTX

ATB92

X.75+T.70+ISO8208+T.90+BTX+PPP

ATB93

PPP+V.120

ATB94

V.120+PPP

ATB95

PPP+X.75+V.120 (* default for DSS1)

ATB96

PPP+V.120+X.75 (* default for U.S.A.)

ATB97

X.75+V.120+PPP

Note: Bundle call is not supported in MDO X.75+V.120+PPP

Table 25. MDO AT Command

Incoming Calls

This chapter provides guidelines for setting up the your omni.net to answer calls.