Acer Modemconte user manual Section Four S Registers, Speakerphone Commands

#VTR=n	Loop current interrupt qualifier
#VZ=n	Set audio mode
:	Pager dial modifier

3.8 Speakerphone Commands

#SPC=n	Select AEC/EEC echo cancellation
#SPD=n	Download speakerphone parameters
#SPF=n	Select auto/fixed echo cancellation
#SPG=n	Set microphone gain
#SPL=n	Set DSP microphone gain
#SPM=n	Enable speakerphone
#SPT=n	Speakerphone forced train
#SPU=n	Upload speakerphone parameters
#SPV=n	Set speakerphone volume
#SPZ=n	Set microphone AGC
#VM=n	Set microphone status

Section Four - S Registers

Your modem has 39 registers, designated S0 through S27, S36-S38, S46, S48-S50, S63, S82, S86, and S98. Table 4-1 shows the registers, their functions, and their default values. Some registers can have their values changed by commands. If you use a command to change a register value, the command remains in effect until you turn off or reset your modem. Your modem then reverts to the operating character- istics specified in its non-volatile memory. Refer to Section 3 for information on how to use the AT commands to manipulate the S registers.

Table 4-1 S - Registers

Register		Function	Range/units Default
S0	Auto-answer Ring		0-255/rings	0
S1	Ring counter		0-255/rings	0
S2	Escape code character		0-127/ASCII	43
S3	Carriage return character		0-127/ASCII	13
S4	Line feed character		0-127/ASCII	10
S5	Backspace character		0-32, 127/ASCII	8
S6	Dial tone wait time		0-255/seconds	2
S7	Remote carrier wait time		1-255/seconds	40
S8	Comma pause time		0-255/seconds	2
S9	Carrier detect time		0-255/0.1 second	6
S10	Carrier loss time		0-255/0.1 second	14
S11	Touch-tone dialing speed		50-255/0.001 second 75
S12	Esc. character detect time		0-255/0.02 second	40

12