Nortel Communication Server 1000 Manual page 69

DPNSS1 Diversion
DPNSS1 Diversion is not supported over VNS Bearer trunks. Network
Call Redirection and Trunk Route Optimization can be provided instead, if
configured over the VNS D-channel.
DPNSS1 Extension Three-Party Service
DPNSS1 Extension Three-Party Service is not supported over VNS Bearer
trunks. Network Call Redirection and Trunk Route Optimization can be
provided instead, if configured over the VNS D-channels.
DPNSS1 Loop Avoidance
DPNSS1 Loop Avoidance is not supported over VNS Bearer trunks
(DPNSS1 Loop Avoidance prevents a call from being looped through a
DPNSS1 network by placing a limit on the number of channels that a
call can use). The ISDN Call Connection Limitation is provided, if it is
configured over the VNS D-channel.
DPNSS1 Route Optimization
DPNSS1 Route Optimization is not supported over VNS Bearer trunks.
DPNSS1 Route Optimization/ISDN Trunk Anti-Tromboning
Interworking
ISDN Trunk Anti-Tromboning may be applied to the VNS part of the call, if
configured on the VNS D-channel.
DPNSS1 Step Back On Congestion
DPNSS1 Step Back On Congestion handles high traffic situations when
congestion is encountered by DPNSS1 trunks. The following scenarios
apply for interworking with VNS.
Homogeneous Networks DPNSS1 Step Back On Congestion is
supported over VNS Bearer trunks, if all the transit nodes within the
DPNSS1 network used for VNS are configured accordingly:
•
In LD 86, if the SBOC (Step Back On Congestion) prompt is set to
NRR (No Reroute) or RRO (Reroute Originator), then it would be
sufficient that the VNS originating node be configured with either RRO
(Reroute Originator) or RRA (Reroute All).
•
In LD 86, if the SBOC (Step Back On Congestion) prompt is set to
RRA (Reroute All) for a transit node, then the different alternative
routes at this node must be configured with VNS and must be
configured as VNS Bearers.
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
Feature interactions 69