Nortel 1000 Description, Installation And Operation Manual page 338

Page 338 of 644
553-3001-363 Standard 2.00
Install and configure IP Trunk 3.01 (and later) node
3 Select the destination Node to be added from the list. OTM provides the
IP Trunk 3.01 (and later) Node IP address in a greyed-out box and fills in
the node name in the Node Name field.
4 Define Node capability for the destination node.
The default setting is SL1, which supports MCDN features. The Node
capability field defines the D-channel protocol used by the destination IP
Trunk 3.01 (and later) node. The protocol must match the protocol
configured in LD 16 in the Route Data Block at the IFC prompt with
respect to SL1 vs. ESGF or ISGF QSIG interface (IFC), and in LD 17 at
the IFC prompt under ADAN DCH. In LD 16, if SIGO is set to STD, then
select the SL1 node capability. If SIGO is set to ESN5, then select
SL1ESN5 node capability. In a mixed ESN5 and non-ESN5 network,
configure an ESN5 prefix for the non-ESN5 IP telephony gateways by
using the "esn5PrefixSet" command from the ITG shell CLI. See "Change
default ESN5 prefix for non-ESN5 IP telephony gateways" on
The choices are SL1, SL1 ESN5, ESIG, and ISIG for networks consisting
of Large Systems. For networks that include Small Systems, the choices
are H.323 V2, ISGF, ESGF, SL1, and SLI ESN5.
New for IP Trunk 3.01 (and later), the node capability choices also include
"CS 1000S". This is for testing purposes between IP Trunk 3.01 (and
later) and a CS 1000S endpoint.
In addition to IP Trunk 3.01 (and later) nodes, the IP telephony trunk
network may contain ITG Trunk 1.0 Basic Trunk nodes or Nortel
Networks IP Telephony Connection Manager. Use H.323 V2 node
capability for these nodes.
Quality of Service section
The default setting enables Quality of Service (QoS) monitoring. QoS
monitoring allows new calls to fallback to alternate circuit-switched trunk
routes when the IP network QoS falls below the configured threshold. If
the default setting is changed and QoS monitoring is disabled, then the
IP Trunk 3.01 (and later) node attempts to complete new calls over the IP
network regardless of the IP network QoS. There can still be alternate
routes, but IP Trunk 3.01 (and later) only uses them if the D-Channel
connection to the local IP Trunk 3.01 (and later) node fails, if the
destination node fails to respond, or if the destination node responds that
all trunks are busy.
5 To disable QoS monitoring of a destination node, uncheck the Enable
Quality of Service (QoS) monitoring checkbox.
September 2004
page 357.