The BG (Business Group) NP (Numbering Plans) provide the dialing plans specific to a BG. To reach lines outside of the BG, the caller usually dials an access code.
Each BG can support several NP types listed in the table below.
Table 1. Types of Business Group Numbering Plans
|Numbering Plan Type||Description|
|DN-level (formerly known as BGL-level*) primary |
(* BGL = Business Group Line)
|This NP is assigned to the subscriber's endpoint profile. Translation always start at this level. However, if the administrator does not assign this NP, the BG's default NP is automatically assigned to the DN (Directory Number) and is used during processing of a call.|
|BG common numbering and routing||This NP provides an additional NP at the BG level. It permits all numbering and routing that is shared by a BG to be provisioned in a common NP that can be used by all BG members.|
|BG default ||This NP is an empty initial NP that is automatically created by Telephony Control Server Assistant when a new BG is created.|
If the BG will have only one NP, this default NP will be the BG's one and only NP.
If the BG will have multiple NPs to support multiple locations within the BG, this default NP becomes the common numbering and routing plan described above.
|System default (E.164- or NANP-compliant)||This NP, also known as the Global Numbering Plan, can be used for common public dial plan access and can be used by any BG.|
These multiple NP types are useful for the following reasons:
Access is retained to features available only to members of the same BG. Regardless of the number of branch offices present in a Lotus Sametime Unified Telephony network, all subscribers can be combined into one BG.
Because a common dialing and routing plan is present, it is unnecessary to separately update each branch office's NP when an additional branch office is added.
Specific access codes
A BG's NP also specifies the access codes listed in the next table:
Table 2. Access Codes Defined in Business Group Numbering Plans
|Access Code Type||Number of Digits||Description|
|Attendant||1 to 5||Connects a Lotus Sametime Unified Telephony user to the attendant. Many times, it is defined as the digit 0.|
|PSTN (Public Switched Telephone Network)||1 to 5||Connects a Lotus Sametime Unified Telephony user to the public network. Many times, it is defined as the digit 9. Also known as off-net call prefix and off-net access code.|
|Private Network||1 to 6||Gives access to private networks. For example, dialing the digit 8 could lead to connection to a private network. Also known as on-net call prefix and on-net access code.|
The subscriber can use * and # as the first (and perhaps only) digit of any of the access codes.
Parent topic: Numbering Plan
- If needed, the customer can specify a code from 1 to 5 digits for use as an equivalent to *.
- * code conflicts are resolved by use of critical inter-digit timing or use of # as an end-of-dialing indicator.