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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
ATM Switch Feature Interactions
B-22ATM Feature Interactions
B
CAMA trunks X Enhanced 911 (E911) service over
CAMA trunks (MF signalling
through a TN744D or TN2182B
port) uses an algorithm that
searches for a touch-tone receiver
within a single location before
searching elsewhere. This ensures
that an E911 call uses a tone
generator within the same location
as the trunk and should not
negatively impact E911 service on
a WAN PNC configuration.
Engineer the service
circuits and port networks
within a location as if they
were a stand-alone
switch, which reduces
reliance on service
circuits located on distant
port networks and
minimizes long-haul ATM
connections just for
services like touchtone
collection.
Dial Plan X The ATM-WAN PNC switch’s dial
plan has a common extension
numbering and common feature
access codes. Take care in
planning to:
■ Combine existing switches
■ Add DID trunks and number
ranges in different locations.
Administer multiple NANP
home area codes (one
per location) when using
subnet trunking. See AAR
and ARS changes.
Hospitality
Automatic
Wakeup
X When guests and attendants enter
or check wakeup times, all times
are reported in that location’s
timezone and daylight savings
time plan.
Time-zone and daylight
savings time
administration
Interexchange
Carrier (IXC)
access
X You can administer IXC access
codes across all locations in a
WAN PNC.
International X Restricted to a single country
code
No provision has been
made for location-based
selection of companding
modes, call progress
tones, loss plans, or other
options.
Paging X Switch capacity is 9 individual
zones and a tenth (global) zone
Modem Pooling X Delayed connections to and
through a modem pool can lead to
failed modem training sequences.
Modern modems are
more than twice as fast as
the fastest modems
supported by a modem
pool.
Table B-6. Release 7 or later ATM feature interactions — Continued
Feature
Affected by
Description RemedyLocation
Race
Condition
Continued on next page