ZyXEL Communications omni series user manual Answering incoming calls, Dialing in V.120 mode

All the above commands can be simplified by combining all of the commands onto one line as follows:

AT&B20&E1&WZ0<Enter>

Dialing in V.120 mode

Finally, use the ATDn command to make the call (n is the phone number you wish to dial). Once the connection is made, you should see the following connect message.

CONNECT 115200/V120 56000/LAPD

This indicates that the connection is made with:

∙DTE speed of 115,200bps.

∙V.120 Protocol

∙Data Speed of 56,000bps.

∙Error Control LAPD.

Answering incoming calls

In most cases, there is no need to configure the TA to properly answer calls. The TA is able to decide which protocol to use by detecting the type of data that is coming in. All you need to do is set S0 to greater than or equal to 1, so the TA will automatically answer an incoming call. If S0=0, the DCE will simply report “RING” to your terminal. External models will also make an audible ring notification.

One exception to this is when the ISDN data call is carried through Speech bearer. In this case, you would need to make an MSN entry for the phone number that you are expecting the Data-over-Speech- bearer call. Use AT&ZI2=n. Refer to the section entitled “Data over Speech Channel” in Chapter 5 for details.

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