ZyXEL Communications omni.net Plus - Manual (Page 171)

Technical Reference for ZyXEL omni.net series
B-19
All the Following Commands Require a 'AT' Prefix
S Com. bit dec hex Function and description +Def./Ref.
0-1 0-3 0-3 Programmable ring frequency, using following value to
choose ring frequency:
0 (*) 0 50Hz
1 1 40Hz
2 2 25Hz
3 3 20Hz
4 0 (*) 0 D-channel L2 send DISC actively.
16 16 D-channel L2 doesn't sent DISC.
2-3, 5-7 Reserved.
S122= bit dec hex
0-1 0-3 0-3 Select a preferred B-channel for outgoing data call (USA
only).
0 (*) 0 Any channel.
1 1 Reserved.
2 2 B1-channel preferred.
3 3 B2-channel preferred.
2-4 0-28 0-28 Set sequence for multi auto dial out.
0 0 PPP+X.75
4 4 PPP+X.75+T.70+ISO_8208+T.90+BTX
8 8 X.75+T.70+ISO_8208+T.90+BTX+PPP
12 C PPP+V.120
16 10 V.120+PPP
20 14 PPP+X.75+V.120
24 18 PPP+V.120+X.75
28 1C X.75+V.120+PPP
5 0 0 Disable multi auto dial out.
32 20 Enable multi auto dial out.
6 0 0 Choose MDMF format as FSK caller ID output
40 64 Choose SDMF format as FSK caller ID output