Technical data

56
Notes:
[a] CID (Calling Party Number) is indicated as: RING CID: <number>
[b] CID (Calling Party Number) is indicated as: CONNECT ... CID: <number>
[c] Indicated as: RING CID: <number> DAD: <number>
[d] Indicated as: CONNECT ... CID: <number> DAD: <number>
[e] Indicated as: RING;<number>
[f] Indicated as: RING;<number>;<number>
AT& commands
AT command Description
AT &C[<n>] Accepted for compatibility reasons. <n> : any integer
AT &G[<n>] <n> Guard tone options
0 Turns guard tone off (default).
1 Turns 550 Hz guard tone on.
2 Turns 1800 Hz guard tone on.
AT &D[<n>] Data Terminal Ready (DTR) options. <n> ranges from 0 to 3. See AT&Q command below.
AT &Q[<n>] Communication options. <n> ranges from 0 to 3. Data Terminal Ready (DTR) options and
Communication (COM) options determine the behavior of the virtual modem when DTR switches from
ON to OFF in accordance with the following table:
&Q &D0 &D1 &D2 &D3
&Q0 N [a] B C D
&Q1 A [b] B [c] C [d] D [e]
&Q2 C C C D
&Q3 C C C D
AT &K<n> <n> Terminal flow control options. Defines the flow control mechanism.
0 Disables flow control.
1 Enables RTS/CTS local + remote flow control (obsolete).
2 Enables XON/XOFF flow control (obsolete).
3 Enables RTS/CTS local + remote flow control.