1 way to do that is to dial *67 before making your call. If you wanted to block your name every time, you could program your out line/dial line/line 1 (whatever you want to call it)button by pressing feature * 1, press the button, press *67 and ok.
As long as your prime line is pool that should work.
Most service providers check the OLI against numbers programmed for the trunk groups assigned to the PRI to prevent number spoofing and will block outgoing calls with a spoofed or invalid OLI.
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