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Posted by Jono on September 30, 2006, 4:59 pm
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>>>> Assume I've got a landline phone at my home. Is there any software
>>>> that I can setup on my home server that would allow me to use an IP
>>>> phone to register with my home server and place calls using my
>>>> landline? Would this require something as complex as an actual IP
>>>> PBX platform? Yes, I know you can order Vonage (or similar)
>>>> service and get a wifi enabled phone, but that's not what I'm
>>>> asking. ;)
>>>
>>> Asterisk can easily do that, coupled to an ATA with an FXO port such
>>> as the Linksys SPA-3102 to interface the telephone line (the
>>> existing phone can be kept operational by connecting it to the
>>> SPA-3102's FXS port).
>>
>> The SPA-3102 can do that on its own. Easier if your IP phone & your
>> SPA are connected to the same VoIPSP
>
> Yes, but authenticating the user to prevent calls to the PSTN by other
> unauthorized VoIP callers may prove tricky: the caller ID may be
> faked, PIN authentication is inconvenient and not so reliable
> (especially if the VoIPSP only support inband DTMF), and HTTP Digest
> Authentication may also fail depending on the VoIPSP's proxy.
How much more secure would Asterisk be, unless callback was employed? I can
only think of two methods of authentication - by CLID or PIN (Three if you
count both)
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