Block incoming phone numbers on Nortel Switch

Does anyone know if you can block incoming phone numbers on a Nortel switch?
Who is Participating?
What type of Nortel & What type of Line (ISDN / Alog )

Are you talking about just some phone numbers (how many). If your thinking about the Calling Line Identification (CLI) what about those that are withheld ?

If not - you provider can block some calls or make the line Out Going Only.
wunderlichAuthor Commented:
I am just going to have the provider take care of the blocking. Thanks for the help.
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