Isdn Mta128St-Usb Configuration Utility - Multitech MTA128ST Quick Start Manual

Select either the Enbloc or the Overlap dialing method for use when establishing a data
call. Your ISDN provider determines the dialing method. The Enbloc method is used for
most ISDN dialing; however, you can select the overlap method if you are working with a
private network. AT command: %A97=
Data Protocol
The data protocol, also known as the B-channel protocol and the rate adaption protocol,
is the language spoken over each 64 Kbps channel between two ISDN devices. The
devices on both ends of the ISDN link must use identical protocols. AT command: !Z=
V.110 Protocol*—Used to connect slower, pre-ISDN communications devices to high-
speed ISDN lines. It handles rates up to only 38400 bps and is used mostly in Europe.
The devices on both ends of the link must be set to identical rates. However, the
MTA128ST-USB (bydefault) is able to adapt to the network rate of a received V.110 call
even though it has S76 or $MB set to a different network rate.
V.110 support is available on certain MTA128ST-USB devices. You can determine if
your Terminal Adapter (TA) provides V.110 support by issuing the ATi2 command in a
terminal window. If the TA responds with
MTA128ST-USB, then V.110 is supported. If the TA responds with MTA128ST-USB-
RC, V.110 support is not available.
V.120 Protocol—Similar to V.110 protocol, but provides rates up to 64000 bps on each B
channel.
X.75 Protocol—Packet-switched network protocol for international use. Layer 2 portion
of this protocol is used commonly as a rate adaption protocol.
MLPPP Protocol—MLPPP (Multi-Link PPP) protocol provides rates up to 64 Kbps per
channel. This protocol uses both B channels at once, providing an aggregate data
transmission speed of 128 Kbps.
Dialing Numbers
The MTA128ST-USB can dial telephone number n, where n can be up to 20 characters. AT
command: Dn. (n = phone number)
Stored Numbers
The MTA128ST-USB can store as many as ten phone numbers, up to 20 characters each.
AT command: &Z=
Dialing Stored Numbers
The MTA128ST-USB can dial a number previously stored in directory number n with the
&Zn=x command. AT command: DSn

ISDN MTA128ST-USB Configuration Utility

The Multi-Tech System's ISDN MTA128ST-USB Configuration Utility is a GUI application
designed to be used with Windows 98/2000/XP. The program assists you in configuring your
switch type, SPIDS, TEI's etc.
Because it is a software utility, you can use it to create and store as many different configurations
as you wish.
If you prefer to configure your Terminal Adapter (TA) using AT commands or if you have special
requirements not addressed by the Configuration Utility, refer to the section that follows entitled
"Using AT Commands to Configure the MTA128ST-USB".
Multi-Tech Systems, Inc. MTA128ST-USB External ISDN Terminal Adapter PN S000340
Chapter 3 - Configuration
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