Nortel Networks NN43001-563 User Manual
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Define the dialing plan information
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is enabled and the level of QoS required. Qos monitoring is only available
on IP Trunk 3.01 (and later) and ITG Trunk 2.x nodes. Enter the destination
nodes for all destination nodes in the VoIP network.
The following sections provide information on the node protocol to use, the
QoS values to enter, and the dialing plan type to enter.
Destination node protocol
The dialing plan information in TM 3.1 must correspond with what is
provisioned on the far end. The node capability must match what is
provisioned in TM 3.1 and on the Meridian 1/CS 1000M. For example, the
ESN5 feature works optimally if all endpoints contacting an ESN5 node
have SL1ESN5 provisioned as the node protocol. Foe more information,
see
"ESN5 network signaling" (page 229)
If the far end is using IP Trunk 3.01 (and later) or ITG Trunk 2.x software,
and is a Small System, the possible protocols are SL1 and SL1ESN5. If the
far end is using IP Trunk 3.01 (and later) or ITG Trunk 2.x software, and is a
Large System, the possible protocols are SL1, SL1ESN5, and QSIG.
Quality of Service
Quality of Service monitoring allows new calls to fall back to alternate
circuit-switched trunk routes such as PRI trunk when the IP network QoS
level falls below the configured threshold. If the QoS is disabled, then the IP
Trunk 3.01 (and later) node attempts to make new calls over the IP network,
whether the IP network status is good or poor.
If the far end is an ITG 2.x Trunk node or an IP Trunk 3.01 (and later)
node and all calls to that far end are going to be locally resolved using the
provisioned dialing plan, then QoS can be used. If QoS is selected, then a
level of Qos must also be selected. The level of QoS is based on a model
developed by the ITU-T which is explained in the section
. The default is value for QoS is 3 which is considered "Good", according
to the E-model.
The QoS feature only works if the far end is an IP Trunk 3.01 (and later) or
an ITG Trunk 2.x node. Additionally, there must be a fallback route for the IP
Trunk 3.01 (and later) node to use to reach the far end, such as a PRI trunk.
Otherwise, if the QoS level between the two nodes falls below the threshold,
calls can no longer be made. If the far end is an IP Peer endpoint and QoS
is turned on, calls cannot be made to that node.
IP Peer Networking does not support the QoS messages sent from the IP
Trunk 3.01 (and later) node. If QoS is turned on, the IP Trunk 3.01 (and
later) node interprets this as a node that is unreachable.
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563
01.01
Standard
Release 5.0
30 May 2007
Copyright © 2007, Nortel Networks
.