Multitech MultiMobile MT56128ZLX-NT, Owner'S Manual

Page: 29 / 96

MultiMobile 29
Chapter 3—Application Program Interfaces (APIs)
When AT&J0 is set (the second number must be specified in
AT&Z0=<second_ISDN_phone_number>), the PC Card dials two
different ISDN phone numbers to make Multi-Link PPP calls (see Method
1). If you don’t specify the second ISDN phone number in AT&Z0,
problems can occur.
Method 3:
AT!Z=9
Sets async-to-sync PPP conversion mode
AT&N0=1 Sets Multi-Link mode
ATD<first_ISDN_phone_number>+<secondary_ISDN_phone_number>
OR
ATD<first_ISDN_phone_number>&<secondary_ISDN_phone_number>
OR
ATD<first_ISDN_phone_number>!<secondary_ISDN_phone_number>
For example: AT!Z=9&N0=1
ATD5 5553000
OR
ATD5551000&5553000
OR
ATD5551000 ! 5553000
The MT56128ZLX makes two ISDN calls automatically through two
separate ISDN phone numbers (5551000 and 5553000) and bundles the two
calls for data transfer. The + , & , and ! modifiers are accepted in the dial
string to indicate the start of a secondary phone number to dial for MLPPP
connections.
If there is a pre-stored ISDN phone number in AT&Z0, it is overwritten by
the second specified ISDN phone number (5553000).
When AT&J1 is enabled, and if two separate numbers using
+ , & , and !
dial modifiers are dialed, the explicitly specified second phone number
supersedes the AT&J1 setting. The second number given in the dial
command (5553000) is used, rather than dialing the first number (5551000)
twice. The only time the AT&J1 has an effect is when only one number is
dialed.