Multi-Tech Systems MT2456SMI22 S8 Pause Time For Dial Delay, S9 Carrier Detect Response Time

Chapter 4 - V.22bis Commands

S8 - Pause Time For Dial Delay

S8 sets the time, in seconds, that the modem must pause when the “,” dial modifier is encountered in the dial string. Range: 2-255 seconds

Default: 2

S9 - Carrier Detect Response Time

S9 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: 6 tenths of a second

Default: 6 (0.6 second)

S10 - Lost Carrier To Hang Up Delay

S10 sets the length of time (in tenths of a second) that the modem waits before hanging up after a loss of carrier. This allows for a temporary carrier loss without causing the local modem to disconnect. When register S10 is set to 255, the modem functions as if a carrier is always present. The actual interval the modem waits before disconnecting is the value in register S10 minus the value in register S9. Therefore, the S10 value must be greater than the S9 value or else the modem disconnects before it recognizes the carrier.

Range: 1-255 tenths of a second

Default: 14 (1.4 seconds)

S11 - DTMF Tone Duration

S11 operation is country dependent.

1.For U.S., S11 sets the duration of tones in DTMF dialing (has no effect on pulse dialing).

2.For other countries, S11 is a country parameter loaded via patch code.

Range: 50-255 milliseconds

Default: 95 (95 milliseconds)

S12 - Escape Prompt Delay (EPD)

S12 defines the maximum period, in fiftieths of a second, allowed between receipt of the last character of the three escape character sequence from the DTE and sending of the OK result code to the DTE. If any characters are detected during this time, the OK will not be sent. Sending of the OK result code does not affect entry into command mode.

Range: 0-255 1/50 of a second

Default: 50 (1 second)

S14 - General Bit Mapped Options Status

S14 indicates the status of command options. Default: 138 (8Ah) (10001010b)

Bit 0 This bit is ignored. Bit 1 Command echo (En).

0 = Disabled (E0).

1= Enabled (E1). (Default) Bit 2 Quiet mode (Qn).

0= Send result codes (Q0). (Default)

1= Do not send result codes (Q1). Bit 3 Result codes (Vn).

0= Numeric (V0).

1= Verbose (V1). (Default) Bit 4 Reserved.

Bit 5 Tone (T)/Pulse (P).

0= Tone (T). (Default)

1= Pulse (P).

Bit 6 Reserved.

Bit 7 Originate/Answer.

0= Answer.

1= Originate. (Default)

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide 38