ZyXEL Communications P-2302HWDL-P1 Support Notes page 70

Prestige 2302 Support Notes
So how do you make a phone call over the PSTN and SIP networks?
Two examples are described next.
Example 1:
To make phone call over the PSTN and SIP networks, enter the pin code if required. SIP initiates the call and
forwards it to PSTN.
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