V.25 Bis Communication Commands - General DataComm SpectraComm V.34 Installation & Operation Manual

V.25 bis Command Set Operation
PRS TR Termination Character
PRS TR selects the ASCII character that represents the command termination character in the
asynchronous mode. The command termination character is the character used to enter a command
for interpretation by the modem. Select the command termination character that is compatible with
your preference and your terminal. Default is 10 or <LF> (line feed).
To select the line feed control-character as the command termination character, type:
PRS TR ; 10 <LF>
To select the vertical tabulation control-character, type:
PRS TR ; 11 <LF>
To select the form feed control-character, type:
PRS TR ; 12 <LF>
PTM Synchronous Timing
PTM selects the clock source when operating in a synchronous data mode.
To select internal clock (supplied by the modem), type:
PTM ; 0 <LF>
To select external clock (supplied by the DTE), type:
PTM ; 1 <LF>
To select receiver wrap clock (derived from received data), type:
PTM ; 2 <LF>

V.25 bis Communication Commands

Communication commands allow you to establish and terminate data communications.
CIC Connect Incoming Call
CIC causes the modem to automatically answer the current incoming call. It temporarily modifies
the automatic answering function so that the modem immediately answers the call, ignoring the
number of automatic answering rings selected with the PRS AA command. Ten seconds after one
incoming call is completed, normal automatic answering is restored.
To invoke this command, type:
CIC <LF>
CRN Call Requested Number
CRN causes the modem to dial a telephone number, supplied with the command, to initiate data
communication with another modem. If the handshake abort timer (AT command S7=x) times out
before the modem detects answer tone, the modem will return on-hook.
To invoke this command, type:
CRN n <LF>
where n is the telephone number to be dialed. (The modem recognizes only the characters contained
in n that are listed in
CRN 5551234 <LF>
060R122-000
Issue 15
Table 5-4.) To dial 555-1234, for example, type:
SpectraComm Dual V.34 Modem
Installation and Operation
Commanding the Modem
5-7