Alcatel-Lucent 7330 Product Information Manual page 256

5 — VoIP overview
When digit collection is started the ONT digit map library (DML) software is
initialized with timers and the configured digit map string. The DML builds a "tree"
with branches for each possible matching path possible in the digit map string from
left to right. As each digit is input:
1 The tree is traversed using the digits entered so far until a matching pattern is
found.
2 If the matching point also satisfies all conditions of the pattern (such as the
number of repetitions allowed), then digit collection is ended.
3 If no matching pattern is found, then digit collection is ended.
Digit map digit collection
Digit collection begins when the device goes off-hook. Digit map processing occurs
until one of the following events occurs:
•
The permanent timer expires when no digit has been received.
•
The interdigit timer expires after at least one digit has been received.
•
no more patterns are matched, and the base of the digit map tree is reached
•
a digit is entered for which there is no matching pattern
•
the enter key is used, but it is processed as an enter key only if there is not a
pattern match for the defined enter key at that point in the tree
The call attempt is made (INVITE sent) with digits collected at the point the digit
collection ends.
Digit map syntax, collection elements, and samples for package C, D,
E, F, and G
The ONT digit map is a pattern that guides digit collection and allows the user agent
to determine when dialing is complete. Digit maps can be configured using XML or
using OMCIv2 via TL1 or CLI. When configured using XML, The digit_map SIP
parameter is used to set this pattern.
To apply a new dial plan, configure the dial plan and apply to both POTS ports. After
locking and unlocking the ONT, the new dial plan goes into effect.
White space in the digit map string is not significant. Characters are not case
sensitive. Parenthesis can be used to create patterns with following operators and
modifiers and to group sets of patterns together. An enter key on the phone is used
during digit collection to end the collection and cause the call attempt to be made
(INVITE sent). The enter key detected by the ONT is configurable with the SIP
provisioning enter_key parameter. The default is "#".
Vertical bar characters are used to create alternate patterns in the digit map. For
example 1 | 2| 3 means 1 or 2 or 3. Care must be taken to make alternative patterns
unambiguous when constructing a digit map.
Table
digit map.
5-56
5-13 lists and describes the elements, symbols, and modifiers used in the ONT
March 2011
ONT Product Information Guide Edition 01
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