This table specifies the network access codes and prefixes that are defined for a specific numbering plan, a specific business group or system wide. The display number prefixes table allows an administrator to enter the prefixes for the public and the private numbering plan.
The International, National, Subscriber, L2, L1 and L0 columns in the DNM Prefixes overview pane show the combination of Public/Private Network access code (PNAC) and prefix defined for a type of number as follows: <PNAC>-<Prefix>. Depending on the availability of <PNAC> and <Prefix> this is:
Table 1. Showing PNAC and Prefix in the DNM Prefixes Overview
It is possible to filter on Business Group Name and Numbering Plan Name.
If the DNM Prefixes overview is shown from within the business group tab of the Lotus Sametime Unified Voice Assistant; then only the system wide entries and the entries specific to the administered business group are shown in the overview.
Table granularity: numbering plan level.Note:
This table assumes that all subscribers and endpoints using a specific numbering plan use the same prefixes.
Business group-specific entries can be defined by creating a Prefixes table entry for that specific business group and the 'ANY' numbering plan.
System-wide entries can be defined by creating a Prefixes table entry for ANY business group and ANY numbering plan.
It is highly recommended to provide all prefixes and network access codes for all possible types of numbers.
The DNM Prefixes table is used in 2 situations:
To find the type of number of a number with unknown type of number by finding a matching number prefix rule for it. With the matching rule, the type of number is known and the prefix can be stripped from the unknown number.
To find the prefix given a specific type of number.
Type of Number is Unknown
The algorithm used for finding a match for an unknown type of number
is a best match (i.e. most digits match) algorithm.
DNM Prefixes table entries specified for a specific numbering plan take precedence over business group specific DNM Prefixes table entries which in turn take precedence over system-wide DNM Prefixes table entries
In case of a tie on the best match the priorization of the Type of Number is as follows:
Table 2. Number Prefix Rules Priorities for best match ties
For each Type of Number an entry is searched for the specified numbering plan and if not available an entry for that Type of Number is searched that applies to 'ANY' numbering plan.
Type of Number is known
For a known type of number, the specific prefix for the type of number is looked up in the DNM Prefixes table for the given numbering plan and returned. If no table entry can be found for the given numbering plan the prefix for the type of number is looked up in the business group specific table entries (with numbering plan ANY for the given business group). If still no table entry could be found, the prefix for the type of number is looked up in the system-wide table entries (with numbering plan ANY
How to Create/Edit DNM PrefixesParent topic: Routing and Translation
This procedure describes how to create/edit DNM Prefixes at the system wide or subscriber level.Entries in the DNM Prefixes overview section are initially shown in the order as used by Lotus Sametime Unified Telephony. The administrator must actively click on a column header to order the entries alphabetically. To be able to know which PNACs (Public/ Private Network Access Code) and prefixes are required for users of a specific numbering plan, a static relationship has to be defined by the system administrator in the database. The DNM Prefixes table is needed for this purpose. If this table is left empty, then no digits will be prefixed to the dialable form of presentation numbers.
How to Delete Display Number Prefixes