[Asterisk-Users] Simple question about ringing multiple phones (extensions)?

[Martin Joseph]

Hey Gurus,

I have a very simple asterisk setup that basically lets me share a PSTN 
line from one location to another.  I would like to have the phones at 
both locations ring when the PSTN # is dialed(inbound calls from PSTN 
to asterisk).

I tried something like:

exten => 2020,2,Dial(SIP/2005,25,tr&IAX/2010,25,tr)

I thought this might cause both 2005 and 2010 to ring when 2020 was 
dialed,  but only 2005 rings?

Thanks for ideas or suggestions on this.
Marty