
374 Chapter 38 Private networking: DPNSS network services (UK only)
N0060606N0060606
Restrictions by telephone type
• model 7000 telephone — associated LED or LCD flashes, and a tone is heard
• ATA2/ASM8+—Call Offer is supported as a Camp On feature, and a tone is heard
• ISDN—not supported
Note the following general conditions and restrictions:
• DND on busy must be programmed as N (DN ##/Capabilities) for a telephone to accept
Call Offer.
• If CF on busy is programmed for the telephone, Call Offer is not accepted.
• The target line for the telephone must be set to: If busy: busy tone, which is the default.
Refer to “Configuring lines: Target lines” on page 183.
• Call Offer does not work if sent over Manual answer lines. It is recommended that the lines be
left at the default: Auto.
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.
There is no system programming 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 and Preferences - Capabilities tab” in the BCM 4.0 Device
Configuration Guide (N0060600).
Loop avoidance
To set Loop avoidance during hardware configuration
1 Select Configuration > Resources > Telephony Resources.
2 Select the DPNSS module.
3 Type a value (0-25) in the Maximum transits box.
The default value is 25.
Private networking with DPNSS
(International only)
Note: Forward on Busy takes priority over DND on Busy. Call Offer
cannot be accepted by putting an active call on hold.
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