Page 28 of 378 Description
553-3001-202 Standard 1.00 April 2000

Sparing ratios for ITG Trunk components

Sparing ratios for selected components are as listed in Table3.
ITG ISL Trunk card description
The ITG ISL Trunk card provides a cost-effective solution for high quality
voice and fax transmissions over an IP network.
The ITG ISL Trunk card is a two-slot, IPE-based assembly designed for
installation in a Meridian 1 IPE shelf. An ITG ISL Trunk card can have a
maximum of 24 ports. A Peripheral Component Interconnect (PCI)-based
DSP daughterboard provides voice processing and installs on the asse mb ly.
The daughterboard compresses speech into packets and s upplies the packets
to the IP network using a Pentium host processor.
The ITG ISL Trunk card monitors the IP network for delay (latency) and
packet loss. The ca rd re rout es n ew cal ls to the alte rnate circu it-s witc hed tru nk
routes if the Quality of Service (QoS) of the data network is not acceptable.
Customers can configure QoS parameters on the ITG ISL Trunk node to
make sure that the ITG Trunk route is not used for new calls if the network
QoS degrades below an ac ceptable level.

Card roles

The ITG ISL Trunk card can have one or more of the following roles:
•Follower
• Active Leader
Table 3
Sparing ratios
Component Sparing ratio
NT0961AA Spare Meridian Trunk ITG 2.0 card (24
ports) (for repair only -- no RTU license) 10:1
NTWE07AA C7LIU DCH PC Card with NTCW84EA
PC Card DCH Pigtail cable 10:1
I/O cable assemblies 20:1