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Chapter 3 — DPNSS1/DASS2 features description and implementation Page 707 of 1536
Direct Route Select
This indicates that the route specified in the call set up must be used and not
any alternative:
— selection of higher grade circuits
— avoidance of routes that may be suspect
— avoidance of more expensive routes
— test calls
External Rerouting Disabled
Calls encountering congestion cannot be rerouted via another signaling
system or to a different address using the DPNSS1 network.
Handsfree - Activated
This detail can be sent at any time in the call to either party that the other is
in or has gone into the hands free state.
Handsfree - Deactivated
As point 13 but sent on deactivation of the feature.
Hunt Group Forwarded
If a call is made to a Hunt group that is split over the network, this information
tells the receiving PBX that the call was originally for a Hunt group:
— to avoid nesting
— to take specific action for diversion or call waiting
— to give indication to called party
Intercom Call
If a intercom call is made between PBX systems, special action may be
needed:
— calling signal
— calling display
— call logging
— diversion features
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