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Chapter 11 - AT Command Set Summaries
11-7
Extended AT* Command Set
Command Options Function & Description Ref.
*Cn Character length, including start, stop and parity bit. S15.3-4
*C0 * 10-bit character length.
*C1 11-bit character length.
*C2 9-bit character length.
*C3 8-bit character length.
*Dn n=0-49 Set default dial pointer at telephone directory location n. S29
*D0 * (See also S35.4 and S38.0)
*En Modem error control negotiation. S21.0
*E0 * if error control negotiation fails, keep the non-error
control connection.
*E1 If error control negotiation fails, disconnect the call
(hang-up).
*Fn Remote configuration enable S36.0
*F0 Deny remote configuration
*F1 Accept remote configuration (Remote Digital Loop-back
must be granted, &T4)
*Gn Security function selection S36.5-7
*G0 Disable security function
*G1 Enable type 1 security, with password check (ZyXEL to
ZyXEL only)
*G2 Enable type 1 security, with password check and call
back (ZyXEL to ZyXEL only)
*G3 Enable type 2 security, with password check
*G4 Enable type 2 security, with password check and call
back
*G5 Enable type 2 security, with password check and call
back, remote user enters the call back number
*Hn n=0-39 Modify user password table at location n.
*HS Modify supervisory password (Default: “ZyXEL”)
*In Command set selection S17.6-7
*I0 AT command set
*I1 V.25bis command set
*I2 Dumb mode
*Mn Leased line auto-handshake mode selection S14.0
*M0 Set to Originate mode
*M1 Set to Answer mode
*Pn n=0-15
*P9 *
Set leased line transmission power level; ranges from 0
dBm to -15 dBm (default: -9 dBm) (see also S35.3)
S17.1-4
*Qn Action taken when line quality changes. S27.6-7
*Q0 No action to poor signal quality.
*Q1 Retrain action taken if signal quality is poor. (See also
S41.2)
*Q2 * Adaptive rate, automatic fall-back or forward.
*Q3 Disconnect if signal quality is poor.
*Rab Read remote profile “b” to local user profile “a” S36.1