hwt@uunet.uu.net (Henry Troup) (07/23/90)
This is from Bell News, Bell Canada's Ontario Region newspaper for
employees. An SP-1 (installed 1974) in Thunder Bay, Ontario was the
last analog toll switch in Ontario. It was replaced by a DMS-200. In
the last ten years, Ontario has gone from 57 analog toll switches to
22 digital.
"The digital equipment has improved efficiency in Thunder Bay's
Operator Services with the implementation of TOPS enhancements such as
automatic calling card service and AOSS with voice response."
"The actual cutover involved 89 offices from White River to the
Manitoba border and noth to James Bay."
(Thunder Bay is pretty far north and west in Ontario, and the
population density is low. The 89 offices are likely local and
adajacent toll offices, probably ranging down to 100 line rural
service boxes of a variety of kinds, including DMS remotes with
standalone capability.)
This table appears:
Ontario Toll Switches
Machine Type Year-End Count
1980 1987 1988 1989 1990
SXS ITD 14 1 1 0 0
#5 XBAR 23 5 2 2 0
XBT 8 0 0 0 0 (Crossbar Tandem)
4A XBAR 3 2 2 0 0
SP-1 4W 8 5 4 2 0
DMS 100/200 0 6 5 4 1
DMS 200 1 10 14 16 21
Total 57 29 28 24 22
"Another modernization thrust is ... installation of DMS 100. Ontario
will modernize about 400,000 lines using [digital] technology in 1990.
This, combined with the Region's growth, will [add] 650,000 lines of
digital ... this year resulting in a base of 3.2 million digital lines
by [year-end].... 'We're aiming for 90 per cent digital by 1995' John
[Wylie, senior operations manager, Network Planning] states.
Part of the local modernization program involves putting LAMA (Local
Automatic Message Accounting) into all DMS 100's. 'With LAMA we can
introduce direct trunking from end offices to remote offices and
capture billing data at the end office on the LAMA tape resulting in
trunking economies and efficiencies couples with improved
survivability,' John notes."
Henry Troup
BNR owns but does not share my opinions
uunet!bnrgate!hwt%bwdlh490 HWT@BNR.CA 613-765-2337