User manual

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X2 Same as X1 + NO DIAL TONE message,
Blind call disabled
X3 Same as X1 + BUSY message, Blind call
enabled.
* X4 All messages supported, Blind call
disabled (see list below).
Notes:
W,@ dial modifiers are ignored in X1, X2
S6 (Wait before dial) is ignored in X2, X4 if no W
is specified in dial string
S6 is set to 0 means a blind call