Hi ,
I have a Panasonic KX-NS500 IPPABX; I will like to know what will be required to use SIP phones without SIP Trunking (We have an existing 30-Channel using PRI Card).
- i would like to use different SIP phones (KX-UT and KX-HDV series)
Presently, 20 user IP license has been exhausted.
What...
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