Nortel DMS-100 Series Maintenance Manual page 38

1-22 Maintenance overview
Five-host-links configuration
With five host links, the number of intraswitching channels for LCC 0
increases by 24. The 24 channels are from the unequipped DS-1 port, which
causes unbalanced traffic capacities in the RLCM. Because the number of
channels for each LCC is unbalanced, blocking may occur if subscribers are
evenly distributed on the LCM units. LCC 1 has a greater capacity to switch
intrachannel calls than LCC 0. The following figure shows the available
channels for an RLCM with five host links.
Channel availability with five host DS-1 links
Host links
3X24=72
channels
Host links
3X24=72
channels
Four-host-links configuration
With four host links, the RLCM is balanced. The figure below shows the
configuration of available channels for an RLCM with four host links.
297–8351–550 Standard 04.01 August 1999
DS30A links from
LCM 0 controller ports
0 1 2 3 4 5 6 7
LCC 0
transmitter
Interchannels
18
LCC 0
receiver
0 1 2 3 4 5 6 7
DS30A links to
LCM 0 controller ports
RMM
Interchannels
30
RMM
DS30A links from
LCM 0 controller ports
7 6 5 4 3 2 1 0
LCC 1
transmitter
Host links
2X24=48
channels
30
Interchannels
18+24
Host links
2X24=48
channels
LCC 1
Receiver
7 6 5 4 3 2 1 0
DS30A links to
LCM 0 controller ports