Data Over Speech Channel - ZyXEL Communications omni TA128 User Manual

&ZI1=s assigns MSN 's', phone number for V.110.
&ZI2=s assigns MSN 's', phone number for V.120.
&ZI3=s assigns MSN 's', phone number for PPP, MPPP.
&ZI4=s assigns MSN 's' for ISDN data, protocol auto-
detection.
&ZI5=s assigns MSN 's', phone number for DTE Port 2.
&ZI6=s assigns MSN 's', phone number for Phone 2.
&ZI7=s assigns MSN 's', phone number for Phone 1.
AT&ZI? can be used to display the MSN numbers. The factory
default for these numbers are UNASSIGNED.
If an incoming SETUP message is offered with addressing
information (i.e. the appropriate part of the called_party_number),
this address will be compared with the MSN numbers assigned by
the AT&ZIn=s commands. The call will be accepted using the
specific protocol, if the assigned number of this protocol matches
the received called party number.
: You are not required to enter the complete number string for the
O O
NOTE
AT&ZIn command. The last few distinguishable digits will be
enough for the TA128 to make the decision. Two phone number
strings are said to be matched if their least significant "n" digit(s)
are identical, where "n" is the number of digits in the shorter
string.
Called_Party_Subaddress information within the incoming SETUP
message can also be used to select the protocols and/or analog
ports. In normal conditions Called_Party_Subaddress information
is not used by the TA128 to select the protocols or services, but
only indicates the subaddress (if any) to the DTE. Refer to Chapter
11 for more detailed information.

Data over Speech Channel

If you are expecting ISDN data calls through the Speech (Voice)
channel, you need to setup MSN for it. If no MSN entries are
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