Multi-Tech Systems ISIHP-4U, ISIHP-4S S6 Wait Time for Dial Tone, S7 Time to Wait for Carrier

Modem AT Commands & S-Registers

S6 Wait Time for Dial Tone

Unit: 1 second

Range: 2–65 (North America), 4–255 (International), 4–7 (U.K.)

Default: 2 (North America), 4 (International and U.K.)

Defines length of time the modem waits after ENTER is pressed before carrying out a dial command. Default setting is two seconds for North America, four seconds elsewhere.

S7 Time to Wait for Carrier

Unit: 1 second

Range: 1–255 (USA), 1–45 (Canada and International), or 1–55 (UK)

Default: 50 (North America and International) or 55 (U.K.)

Determines amount of time the modem waits for a carrier signal before it disconnects. Default value is 50 seconds except the UK model, which defaults to 55 seconds. After dialing, the modem waits for a carrier signal for up to 50 or 55 seconds and if none is detected, terminates the call. Maximum S7 value is 255 seconds for the US model, 45 seconds for Canadian and International models, and 55 seconds for the UK model. S7 also determines the wait for silence time for the @ dial modifier.

S8 Pause Time for Comma

Unit: 1 second

Range: 0–65 (North America), 4–255 (International), 4–7 (UK)

Default: 2 (North America), 4 (International and UK)

Determines the length of pause caused by a comma character in a dialing command. Default setting is two seconds for North American model and four seconds for international and UK models. S8 can be set for up to 65 seconds. S8 also defines the length of time the modem waits before retrying a call after it detects a busy signal. Some computer systems need more than two seconds to reset. If this is the case, increase the value of S8.

96 MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD