Asus Analog Telephone Adapter AX-112 - Manual (Page 17)

AX-112 Analog Telephone Adapter 17
Chapter 3 - Configuration
English
Phone default connect to
You can select the connection state of the phone set to VoIP FXS codec circuit
or to the PSTN port when the line is idle. It is set to ‘FXS’ by factory default for
normal usage. For one special case, when the caller ID signal from PSTN line
comes before the first ring, then you may select the phone set to be connected
to PSTN as default and ensure all the caller ID signal pass to the phone set.
When you select the option “Phone default connect to PSTN”, you must make
sure your PSTN line is properly connected to the RJ11 jack of the line port and it is
working properly. If your PSTN line is not working with proper voltage on line, the
phone set will not operate properly.
Dialing plan
A dialing plan gives the unit a map to determine when a complete number has
been entered. Dialing plans are expressed using the same syntax as used by
MGCP NCS specification. The formal syntax of the dialing plan is described by
the following notation:
Digit ::= “0” | “1” | “2” | “3” | “4” | “5” | “6” | “7” | “8” | “9”
Timer ::= “T” | “t”
Letter ::= Digit | Timer | “#” | “*” | “A” | “a” | “B” | “b” | “C” | “c”| “D” | “d”
Range ::= “X” | “x” --matches any digit | “[“ Letters “]” --matches any of the specified
letters
Letters::= Subrange | Subrange Letters
Subrange::= Letter --matches the specified letter | Digit “-” Digit --matches any digit
between first and last
Position::= Letter | Range
StringElement::= Position --matches any occurrence of the position | Position “.” --
matches an arbitrary number of occurrences including 0
String ::= StringElement | StringElement String
StringList::= String | String “|” StringList
DialPlan::= String | “(“ StringList “)”
A dialing plan, according to this syntax, is defined either by a (case insensitive)
string or by a list of strings. Regardless of the above syntax a timer is only allowed
if it appears in the last position in a string (12T3 is not valid). Each string is an
alternate numbering scheme. The unit will process the dialing plan by comparing
the current dial string against the dialing plan, if the result is not qualified (partial
matches at least one entry) then it will do nothing further. If the result matches or
is over-qualified (no further digits could possibly produce a match) then sends
out the string and clear the dial string. The Timer T is activated when it is all that
is required to produce a match. The period of timer T is 4 seconds. For example
a dialing plan of (xxxT|xxxxx) will match immediately if 5 digits are entered, it will
also match after a 4 second pause when 3 digits are entered.