[asterisk-users] Correct Caller-ID

Matt mhoppes at gmail.com
Mon Aug 9 14:03:36 CDT 2010

I've seen caller-id come through from carriers as:
NPA-NXX-xxxx, 1-NPA-NXX-xxxx, and +1-NPA-NXX-xxxx

My question is: what is the correct way to send Caller-ID by set standards?
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