JESSICA PBX GATEWAY QUESTIONNAIRE LBI-39039B
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MD110 NUMBERING PLAN
A numbering plan and corresponding number series allocation within the MD110 defines the structure or framework for
all number analysis and call routing performed by the Jessica/MD110. Number allocation within the MD110 can be
described as specification of the leading digit or pre-digits to be used (or reserved) for a given function by the MD110. A
minimum number of digits must be specified such that the pre-digits uniquely define the set of numbers or number series to be
used for the intended function. The pre-digits defined for each function may not overlap or conflict with the pre-digits used
for any other function.
To properly configure the MD110 for the desired Jessica/MD110 operation, numbering plan information must be defined
for any of the following functions which apply. The general MD110 configuration data file provided by EGE defines a
“standard” numbering plan which may be used. This numbering plan, however, may not be acceptable for all applications.
For each of the following functions which apply to the intended Jessica/MD110 application, provide the numbering plan
information indicated. Information pertaining to the “standard” numbering plan and other numbering restrictions are noted.
1. Which number series (unique pre-digit(s)) will be used for making inbound EDACS radio calls?
[The standard numbering plan uses the pre-digits 0-3 for making inbound EDACS radio calls (leading dialed digits 0, 1,
2, or 3). “0” and “1” are the leading dialed digits for a 5-digit radio LID individual call. “2” is the group call indicator
number, and precedes a 4-digit GID when making a radio group call (“2” + 4-digit GID). “3” is the digital call indicator
number, and precedes a 5-digit radio LID when making an individual digital call (“3” + 5-digit LID). “3” precedes the
group call indicator number and 4-digit GID when making a group digital call (“3” + “2” + 4-digit GID).]
It is possible to specify an additional EDACS call selector number to be used as the leading digit(s) of the number series
for making inbound EDACS radio calls. An example of this is using the number “7” as the EDACS call selector. The
pre-digits used for making inbound EDACS radio calls would then be 70-73 (leading dialed digits 70, 71, 72, or 73). In
this example “7” would be the EDACS call selector number, and would precede the digits 0-3 for making EDACS radio
individual, group, or digital calls as described above.]
2. Which number series (unique range of numbers, typically 4 digits in length) will be used for MD110 test extensions?
[The standard numbering plan reserves the number series 4000-4099 for MD110 test extensions.]
3. Which number series (unique pre-digit(s)) will be used to call the public network (PSTN)?
[The standard numbering plan uses the number “9” as the pre-digit for dialing the public network. See Least Cost
Routing, item 7 below.]
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