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Mitel NuPoint Messenger Technical Documentation - Release 7.0
RCOSs use NPA/NXX screening to determine which area codes or exchanges to restrict. The
abbreviations NPA and NXX are industry terms for the three-digit area code and the three-digit
prefix (exchange) within an area code, respectively. NPA/NXX screening is easy for the system
administrator to configure and is transparent to mailbox owners.
When a mailbox owner enters a telephone number for any type of outdial, the system checks the
number against the call screening set in the mailbox’s RCOS. If the telephone number is not
restricted, normal processing resumes. If the telephone number is restricted, the system
responds “I’m sorry that telephone number is not within your calling area,” then cycles back to
entering a telephone number.
RCOS and NPA/NXX screening have these features:
• Outdial limits for message delivery, automatic wakeup, paging notification, call placement,
and fax delivery
• Multiple screening levels, including
- System screening of specific numbers
- NPA screening
- NXX (exchange) screening of up to 64 NPAs (area codes)
Procedures
You can perform the following procedures with RCOS. These procedures are located in Volume 2
of this manual.
Procedure Number
RCOS and NPA/NXX Usage CP 3293
Assign an RCOS to a Mailbox CP 4335
Configure an RCOS CP 3295
Delete an RCOS CP 5406
Modify NPA/NXX Tables CP 4334
Modify the Absorption Table CP 4332
Modify the Exact Match Table CP 4333
Set RCOS System-Wide Parameters CP 5401
View RCOS Information CP 5404
The system capacity is 640 RCOSs.
Default RCOS
You implement screening by creating a Restriction Class of Service (RCOS) and assigning it to
the mailboxes. The default RCOS is RCOS 1; it is unnamed and allows unrestricted outdial
capabilities. The RCOS 1 contents are summarized in Table 8-8. To implement NPA/NXX call
screening, you must modify RCOS 1 or configure another RCOS. RCOS configuration involves
setting both system-wide parameters and RCOS-specific parameters.
Table 8-8 Contents of Default RCOS 1
Parameter Value
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Copyright 2002, Mitel Networks Corporation 126