Instruction manual

Appendix A. AT Commands and S-Registers
A-12 Express 3010/3110 User Manual 61200239L1-20
S34 DTE DTR Determines how the Express responds to
changes in DTR. This is a bit-mapped register.
0
=Ignore DTR
1=Force AT command mode when DTR is off
2=Dump incoming call when DTR is off
4=Hang up incoming call when DTR is off
8=Hang up outgoing call when DTR is off
16=Answer incoming call when DTR is on
32=Dial SN0 when DTR is on
64=Dial SN0 when DTR transitions from off to
on
S46 V25 MODE Selects the type of V.25 bis dialing used.
0
=Asynchronous V.25
1=HDLC V.25
2=BISYNC V.25
3=HDLC with flags V.25
S50 LINE MODE Selects the operating mode of the Express.
0
=Dial service (switched service)
1=Leased service (nonswitched service)
S51 LINE CLOCK Selects the clock mode in leased mode.
0
=Slave (default)
1=Master (Leased line only, limited distance
MODEM application only)
S52 SWITCH TYPE Selects the network switch type for dial service.
0=AT&T 5ESS
1=Northern Telecom DMS-100
2
=National ISDN-1
3=NEC
4=EuroISDN (BT) (3110 only)
S53 CALL TYPE Call type (Dial service only).
0=Speech
1=Audio
2=56 Kbps data
3
=64 Kbps data