SI2457-C-FSR Silicon Laboratories Inc, SI2457-C-FSR Datasheet - Page 31

• Manufacturer Part Number: SI2457-C-FSR
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-C-FSR

• Lead Free Status / RoHS Status: Compliant

&X1
&X2
*
&Z
Command
Command
Y2A
%On
%O1
%O2
%Cn
%C0
%C1
%C2
%C3
%Vn
%V0
%B
%$
Table 11. Extended AT& Command Set (Command Defaults in Bold) (Continued)
Automatic determination of telephone line type.
Result code: WXYZn
W:
X:
Y:
Z:
n:
Note: The initial number attempted for an outside line is controlled in S51.
Same as &X1, but Y result (PBX) is not tested.
Produce a constant answer tone (ITU-T) and return to command mode. The answer tone continues
until the ATH command is received or the S7 timer expires.
Enter low-power wake-on-ring mode.
Display AT% command settings.
Report blacklist. See also S42 register.
Data compression
Disable V.42bis and MNP5 data compression
Enable V.42bis in transmit and receive paths. If MNP is selected (\N2), then %C1 enables
MNP5 in transmit and receive paths.
Enable V.42bis in transmit path only.
Enable V.42bis in receive path only.
Answer mode.
Si2457/34/15/04 will auto-answer a call in answer mode.
Si2457/34/15/04 will auto-answer a call in originate mode.
Automatic Line Status Detection.
After the %V1 and %V2 commands are issued, the Si2457/34/15/04 will automatically check the
telephone connection for whether or not a line is present. If a line is present, the Si2457/34/15/04
will automatically check if the line is already in use. Finally, the Si2457/34/15/04 will check line status
both before going off-hook and again before dialing. %V1 uses the fixed method, and %V2 uses the
adaptive method. %V0 (default) disables this feature.
Disable automatic line-in-use detection.
Table 12. Extended AT% Command Set (Command Defaults in Bold)
0 = line supports DTMF dialing.
1 = line is pulse dial only.
0 = line supports 20 pps dialing.
1 = line supports 10 pps dialing only.
0 = extension network present (PBX).
1 = outside line (PSTN) connected directly.
0 = continuous dialtone.
1 = make-break dialtone.
0–9 (number required for outside line if Y = 0).
Rev. 1.1
Action
Action
Si2457/34/15/04
31