> 4.3 | AT&D Set Data Terminal Ready (DTR) line mode

> AT&D determines how the ME responds if the DTR line is changed from ON to OFF state during data mode.
> Syntax

> Exec Command AT&D[<value>]
> Response(s)
> OK

> Reference(s) |  | PIN |  | ASC0 | ASC1 | USB | MUX1 | MUX2 | MUX3 |  |  | Charge | Q | Last
> V.250 |  | - |  | + | ± | + | + | + | + |  |  | - | + | -

> Parameter Description

> <value>(num)(&W)(&V)

> [0]
> ME ignores status of the DTR line.
> 1
> ON->OFF on DTR: Change to command mode while retaining the connected call.
> 2(&F)
> ON->OFF on DTR: Disconnect (CSD or PPP) data call and change to command mode. During OFF state of the DTR line auto-answer is disabled.