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CHAPTER 5 : INSTRUCTION SETS
5.4 V.25bis Auto call Unit
V.25bis auto call unit is used for auto calling in asynchronous and synchronous data
formats.
1. V.25bis Commands
a. CRNx
- Call request - dial a phone number (x) entered on DTE keyboard.
b. CRSy
- Call request - dial a phone number stored in specified memory
address (y). y=0-9.
c. PRNy;x
- Program number - store a phone number (x) in specified
memory address (y). y=0-9
d. RLN
- Request list of all stored numbers.
e. CIC
- Connect incoming call. Auto answer enable.
f. DIC
- Disregard incoming call. Auto answer disable.
2. V.25bis Responses
a. INC
- Modem detects an incoming call.
b. INV
- Modem received invalid command entry.
c. VAL
- Modem received valid command entry.
d. LSN
- Modem responses LSN when received RLN command.
e. CNX
- Connection.
3. V.25bis Call Failure Responses
a. CFIET
- Busy tone had been detected
b. CFIAB
- Modem aborted a call.
c. CFIRT
- Ringback timeout.
d. CFICB
- Modem busy.
e. CFINS
- No phone number is stored.
f. CFIND
- No dial tone is detected.
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