Mailinglist Archive: opensuse (770 mails)

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Re: [opensuse] connecting my telephone to the internet
On Thu, 2012-08-23 at 20:45 +0200, Per Jessen wrote:
Carlos E. R. wrote:

On 2012-08-23 17:42, Per Jessen wrote:
Carlos E. R. wrote:

The provider could be just a local asterisk.

Yes, but connected to the internet, and known to other servers
outside. Not trivial.

To make calls on the internet, the asterisk server does need an
internet connection, but
it doesn't need to be known to other servers. It is actually fairly
trivial :-)

Making calls to somebody else registered on another server? Normally
any sane asterisk will refuse an incoming call from another asterisk
that is unknown.

No it won't - it would never receive any external calls if it did. Any
SIP-client can call me at sip://per@xxxxxxxxx without my asterisk
server knowing about where it comes from other than it's IP-address.

afaicr, that is configurable in asterisk.
You can set that * will refuse incoming call's from hosts that did not
register before.

Normally voip soft/hardphones should register on your asterisk,
and your asterisk should register at your VOIP-provider.

You don't have to do that, but it's a security issue.

Like mom's tell their kids: "never listen to strangers" ;-)


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