Scenario 4: Facilities Planning, Calls Originating Within The Network And Going To The Pstn, Systems E And H - Lucent Technologies MERLIN LEGEND Release 6.0 Network Reference Manual

Table 2–20. Scenario 4: Facilities Planning, Calls Originating within the Network and Going to the PSTN, Systems E and H
Component System E: Baltimore, MD (Area Code: 410)
MERLIN LEGEND-Ntwk
DS1 Switch Type
Switch Identifiers
22 for a system within 200 miles (System H)
Programmed on
02 for a system more than 200 miles away (System F)
This System
03 for a system more than 200 miles away (System G)
All FRLs are set to low values for these calls. Four digits
ARS Routing:
are absorbed for 410 area code calls, and no digits are
Calls to Local or absorbed for 301 and 703 area code calls.
Nearby Area
Codes
ARS Routing:
For primary routes serving calls to area codes 509 and
Calls to Area Code
512, the FRL is 0.
of Non-Local
The FRL is higher for primary routes to areas near but not
System
in the same area code as one of the other network
(Absorb = 0;
systems. A 218 or 713 area code route (Houston) via the
Prepend = 9)
smaller tandem tie trunk pool has an FRL of 4.
Secondary routes using the PSTN have FRLs as high
as 6.
System H: Reston, VA (Area Code: 703)
MERLIN LEGEND-PBX
21 for a system within 200 miles (System E)
The factory-set Special Numbers Table and Dial 0 Table
must use the main pool, which includes the system's loop-
start line and directs emergency (911) and other special
numbers calls to the correct local services.
All other routes, including Toll Table, specify tandem trunk
pools with prepending of 9.
The default Local Table uses tandem trunks and prepends
91703.
Routing specifies pools of tandem PRI facilities, which are
also used for non-local extension calling.
The FRL is 0, 1, or 2 for calls using network area codes:
410, 512, and 509. FRLs are higher for other area codes,
depending upon the time of day and toll costs.