
Appendix A: Network Examples 359
P0911588 Issue 01 Enterprise Edge 2.0 Programming Operations Guide
Private networking with DPNSS (International systems only)
DPNSS supports the Universal Dialling Plan (UDP), an international standard for
sending and receiving private numbers over networks. The UDP requires that a
number include the following:
• a Home Location Code (HLC) which is assigned to a PBX as part of it’s
destination code and can be any string of digits up to a maximum length of
seven. For each HLC, a routing code must be programmed in the system.
• a Directory Number (DN) which is assigned to individual extensions as a line
appearance. The DN appears as the last string segment in a dialed number. In
the number 244-1111, “1111” is the DN.
• a Private Access Code which can be programmed into the system as part of the
destination (dest) code table to prevent conflicts with the internal numbering
system.
A typical Private Number, using a Private Access Codeand dialed from anothersite
on the network, is show below.
In this networking example, a private network is formed when several systems are
connected through a Meridian M1 and a terminating Enterprise Edge system. Each
site has its own HLC and a range of DNs. DPNSS networking on page 360
illustrates this example. For information on programming routing for this example,
refer to Routing information for DPNSS network example on page 361.
To West End: (Call terminates at West end)
Routing Service Destination Code 2
Normal route 001
Absorb 0
To Public Network: (Call terminates at M1)
Routing Service Route 002
Dial out # No number
Use Pool PRI-A
DN type Public
Destination Code 9
Normal route 002
Absorb 0
Private Access
Code
+ Home Location
Code
+Directory
Number
=CallingPartyNumber
6 +848 + 2222 = 6-848-2222
Heading Parameter Setting
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