Nortel Communication Server 100 Manual page 43

3.
Calculate card slots: 277/16=17. This number is greater than the 16
slots available in an IPE module.
4.
Calculate maximum allowed lines: 16x16=256, or 16x10=160. 256
lines (or 160 lines) with 6 CCS each are the maximum number of lines
allowed for each Remote IPE module or Remote IPE cabinet for three
T1 carriers.
Configuration for Mixed Sets, Trunks and Data Terminals. Example
2: A remote data processing center is connected to the main office
through private E1 carriers. For reliability purposes, spare carriers are
required as backups.
Find the configuration to support 80 integrated voice and data lines at 6
CCS for voice and 14 CCS for data, and 20 trunks at 26 CCS each.
1.
From Table 5 "Carrier capacity calculations" (page 39)
heading, two carriers can serve 1384 CCS (with spare, two carriers are
the maximum link size per each Carrier Remote IPE module or Carrier
Remote IPE cabinet).
2.
Calculate total offered traffic: 80x6 + 80x14 + 20x26 = 1600 + 520
= 2120 CCS. This number is larger than 1384 but less than 2768
(=2x1384). The offered traffic is too much for two carriers but within
the capacity of four carriers (two lines of two carrier links). Note that
the integrated lines alone generate more traffic (1600 CCS) than two
carriers can handle, they need to be split between two IPE modules
or Carrier Remote IPE cabinets.
3.
Calculate card slots: (80+80)/32 +20/8 = 5 +3 = 8. There are sufficient
card slots in one cabinet to handle the required ports. Even though
the configuration exceeds the traffic capacity of one carrier group in
Step 2, it is still a good idea to check physical constraints to determine
whether traffic is the only constraining parameter.
4.
Configuration Summary:
IPE1 (Carrier Remote IPE cabinet): 3 32-port IVD cards, 1 trunk card,
3 E1 carriers including one spare.
IPE2 (Carrier Remote IPE cabinet): 2 32-port IVD cards, 2 trunk cards,
3 E1 carriers including one spare.
Given ports and traffic to find carriers and cabinets. Non-blocking
Sets Only (two Carrier Remote IPE cabinets) Example 3: A Carrier
Remote IPE is located in an airport fire station two miles from the main
terminal building where the local system is installed. There are 80 lines
in the Carrier Remote IPE where non-blocking network and a spare
Nortel Communication Server 1000
Carrier Remote IPE Fundamentals
NN43021-555 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
Engineering guidelines 43
under E1