pap2 na, and spa2102 is 2 lines in two lines out, spa3102 is 1 line in and 5 lines out, which is kind of PBX, choose what you want! lots of people here prfer spa1001.
with DDNS services you can have many line in, but you still have same numbers of out lines.
read the articles here about VOIP.
with DDNS services you can have many line in, but you still have same numbers of out lines.
read the articles here about VOIP.
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