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Other planning considerations
November 2004
Avaya Modular Messaging Concepts and
Planning Guide
13-23
The calculator in Table 13-10 provides information for planning port
requirement for a Modular Messaging—Microsoft Exchange or a
Modular Messaging—IBM Lotus Domino system.
Total / Day Busy
Hour
628,625 174.62 6,286.25
Table 13-9. Modular Messaging—MSS port requirements planning
Table 13-10. Modular Messaging (Exchange or Domino) port requirements planning
Feature using ports
AHT
% capable
frequency/
day/user
% busy
hour
Seconds
/Day
Erlangs
CCS
Per Subscriber
Call Answer 35 100% 2.000 14.0% 70.00 0.02 0.70
Fax Answer 5 100% 0.050 14.0% 0.25 0.00 0.00
Fax Inbound 0 100% 0.000 14.0% 0.00 0.00 0.00
Fax Outbound 0 100% 0.000 14.0% 0.00 0.00 0.00
Automated
Attendant
20 100% 3.000 14.0% 60.00 0.02 0.60
Caller App 1 60 100% 0.250 10.0% 15.00 0.00 0.15
Caller App 2 30 100% 2.000 14.0% 60.00 0.02 0.60
Caller App 3 120 100% 0.100 10.0% 12.00 0.00 0.12
Call Me 180 20% 3.000 5.0% 108.00 0.03 1.08
Find Me - Calling
Party
120 10% 6.000 5.0% 72.00 0.02 0.72
Find Me - Called
Party
300 10% 3.000 5.0% 90.00 0.03 0.90
TUI Access 360 100% 2.000 14.0% 720.00 0.20 7.20
Client
Access/Dual
Connect
60 60% 3.000 14.0% 108.00 0.03 1.08
Record (e.g.
conference calls)
2,700 100% 0.001 10.0% 2.70 0.00 0.03