
Chapter 36 Private networking: DPNSS network services (UK only) 335
Networking Configuration Guide
Route Optimization
Route Optimization is a DPNSS 1 feature for BCM that allows calls to follow the optimum route
between two end PBXs. This allows efficient use of network resources.
No system programming is required for the feature when BCM is working as a terminating PBX
system. However, BCM must have a private access code programmed that maps to a valid
destination code or line pool code on DPNSS lines. Further, Allow redirect must be set to selected.
For more information, see Capabilities tab” in the Device Configuration Guide (NN40020-300).
Loop avoidance
To set Loop avoidance during hardware configuration
1 Click the keys beside Configuration > Resources> Telephony Resources.
2 In one of the expansion modules select DPNSS.
3 Click the Trunk Module Parameters tab.
4 Type a value (0-25) in the Maximum transits box.
The default value is 25.
Private networking with DPNSS
(International only)
DPNSS supports the Universal Dialing Plan (UDP), an international standard for sending and
receiving private numbers over networks. The UDP requires that a dialing number includes the
following:
• a Private Access Code, programmed into the system as part of the destination code table to
prevent conflicts with the internal numbering system. (Configuration > Telephony > Dialing
Plan > Private Network > Private Access Code)
• a Home Location Code (HLC) assigned to each PBX system, and configured as part of the
destination code (a maximum of seven digits). For each HLC, a destination code must be
programmed in the system. (Configuration > Telephony > Dialing Plan > Private Network
> Location code)
• a Directory Number (DNs) assigned to each extension 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.
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