[Freeswitch-users] [newbie] questions

[Josh]

>> But calls will be sent to FreeSWITCH by some device, correct? If it's 
>> good old-fashioned SIP then FreeSWITCH will handle it just fine.
> Yes, there are all softphones (PC machines with old-fashioned headset 
> & mic and smartphones running a sip client).
Forgot to add - external calls (via the external VOIP provider) cannot 
be received via the FreeSWITCH listening port because of the fact that 
my ISP blocks connections initiated from outside. When a connection 
request (SYN) is initiated from my side, my ISP allows it, no problem (I 
believe the applicable term in such scenarios would be "fascist firewall").

What usually happens is that the control channel to my external VOIP 
provider on port 5060 is initiated by my end and when a call needs to be 
received from outside, this is communicated through the control channel 
(which is kept open at all times) and then my client opens both rtp data 
stream connections to receive the call. Does that make sense?