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Chapter 3 — DPNSS1/DASS2 features description and implementation Page 799 of 1536
— Least cost route selection by arranging the routes based on relative cost.
— Route control allowing or restricting access to routes based on their
restriction level, the time of day, or the dialed sequence.
— Simple calls using UDP numbering across the DPNSS1 Meridian
Customer Defined Network (MCDN) gateway, operating with either
enbloc or overlap sending and receiving.
— The following DPNSS1 Supplementary Services are supported on UDP
DPNSS1 and across the DPNSS1 MCDN gateway:
• Call Back When Free
• Call Back When Next Used
• Executive Intrusion
• Loop Avoidance
— The following DPNSS1 Supplementary Services are supported on UDP
DPNSS1
• Three-Party
• Call Offer
• Redirection
• Step Back on Congestion
• Route Optimisation
With DPNSS1, no parameters are exchanged between the switches to indicate
whether a Coordinated Dialing Plan (CDP) or UDP number is being sent. To
bypass this situation, the MCDN Insert Access Code (INAC) prompt is
extended to DPNSS1 on a per route basis to indicate whether the route is
dedicated for the reception of UDP numbers, or non-UDP numbers and UDP
numbers with a NARS access code.
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