Compaq Armada 7400 Reference Manual page 100

Some data or fax communications software prompts you for
specific information about the model of modem you are using. In
this case, if the internal modem is not available as a choice, select
one of the following modems: Compaq Modem or Hayes
Compatible.
Choosing another modem does not affect the actual
connection speed of the modem.
Use the following information if required for modem setup:
COM port setting
DCE Speed
DTE Speed
Data Format
Data Format
Data F ormat
Dial Command
AutoAnswer Command
Sound
Columns
Local Echo
Operating
Storage
Operating
Storage
Communications Connector
Telephone, central office network
This has not been determined yet
56 Kbps
115.2 Kbps
Databits – 8
Parity – N
Stopbits – 1
ATDT
ATS0 = 1
Enabled
80
Enabled
32 to 135 F
-40 to 155 F
95% maximum
95% maximum
+5.0 VDC (+/-5%@1.5 W max.)
Standard RJ-11 Telephone
Connector
Internal DAA
0 to +60 C
-45 to +70 C