Epson 500 Series - Manual (Page 90)

AT Command Summary
Command Description
+++ Escape code
A / Repeat last command string
AT Attention
A Answer immediate (incoming call)
B0 CCITT v.22 protocol at 1200 bps
B1 Bell 103/212A protocol at 1200 bps
D Dial: originates a call
E0 Echo off (command mode)
E! Echo on (command mode)
HO On hook: hang up immediately
H ! Off hook: ready to dial
I0 Returns modem's product ID code
I1 Returns modem's ROM checksum
I2 Tests modem's internal memory
L3 Speaker volume high
M 0 Speaker always off
M1 Speaker on until carrier is detected
M2 Speaker always on
M3 Speaker on after lost digit dialed; off when carrier is detected
O0 Return on-line
O1 Return on-line and initiate equalizer retrain (2400 bps)
Q0 Result codes on
Q1 Result codes off
Sr Sets pointer to register r
Sr? Reads value stored in r
Sr=n Sets register r to n
V0 Returns result codes as numbers
V1 Returns result codes as words
X0
Enables basic result codes (0-4)
X1 Enables extended result codes (0-5, 10)
X2 Enables extended result codes (0-6, 10)
X3 Enables result codes (0-5,7,10)
B - 4 Fax/Modem