User's Guide for ZyXEL Omni 56K USB Modem
3-7
Cyclic Dial
Dial the number stored in EEPROM at location n (0 to 3) if cyclic dial s44.3=1 is set.
If the first dial is not successful, the modem cycles dial through the four numbers stored in
memory.
Caller Number Delivery (Caller ID)
Caller Number Delivery (CND), commonly called Caller ID, is a new kind of phone service
that may be offered by your local phone company. Check your phone company for availability.
You must subscribe to it and usually pay an additional monthly service charge for this service.
With CND service, the phone company's central office sends the coded caller information to
the called station. This information is sent once between the first and second ring. Your
modem can decode this caller information and present it to the connected computer/terminal
during the second ring period as part of the call progress ring message. The modem also
reports the Caller ID information if asked by the command AT*T.
There are two kinds of caller information message formats sent by the phone company.
n One is the single message format that includes date, time, and caller ID.
n The other is the multiple message format which also includes the caller name as
registered with the phone company.
The command ATS40.2=n is used to enable (n=1) or disable (n=0) the Caller ID detection
function. The default is disabled. Enable it only when you have this service and want to enable
its detection.
NOTE: The Caller ID message may cause some communication
software that is not expecting it to become confused. If you plan
to use the Caller ID feature, be sure you are using software that
supports it.