Digit Mapping; Table 9-2: Digit Map Pattern Notations - AudioCodes Mediant 2000 User Manual

SIP User's Manual
number, in the example, the number is changed to 8888888; 3) the prefix that was
previously calculated is then added.
9.1.2

Digit Mapping

Digit map pattern rules are used for Tel-to-IP ISDN overlap dialing. The device collects
digits until a match is found in the user-defined digit pattern (e.g., for closed numbering
schemes) or until a timer expires (e.g., for open numbering schemes). If a match is found
(or the timer expires), the digit collection process is terminated.
The maximum number (up to 49) of collected destination number digits that can be received
from the Tel side by the device can be defined (using the parameter MaxDigits). When the
number of collected digits reaches the maximum (or a digit map pattern is matched), the
device uses these digits for the called destination number.
Dialing ends (and the device starts sending the digits) when any of the following scenarios
occur:

Maximum number of digits is received.

Inter-digit timeout expires (up to 10 seconds). This is defined by using the parameter
TimeBetweenDigits.This is the time that the device waits between each received digit.
When this inter-digit timeout expires, the device uses the collected digits to dial the
called destination number.
Digit map (pattern) rules are defined by the parameter DigitMapping. This is used to reduce
the dialing period for ISDN Overlap dialing (ISDNRxOverlap is set to 1). If the digit string
(i.e., dialed number) matches one of the patterns in the digit map, the device stops
collecting digits and establishes a call with the collected number.
The digit map pattern can contain up to 52 options (rules), each separated by a vertical bar
(|). The maximum length of the entire digit pattern is 152 characters. The available
notations are described in the table below:
Notation
[n-m]
.
x
T
S
Version 5.8

Table 9-2: Digit Map Pattern Notations

Range of numbers (not letters).
(single dot) Repeat digits until next notation (e.g., T).
Any single digit.
Dial timeout (configured by the parameter TimeBetweenDigits).
Immediately applies a specific rule that is part of a general rule. For example,
if a digit map includes a general rule 'x.T' and a specific rule '11x', for the
specific rule to take precedence over the general rule, append 'S' to the
specific rule (i.e., '11xS').
Description
401
9. IP Telephony Capabilities
October 2009