12-11-2014 09:44 AM - edited 03-21-2019 08:28 AM
hi, all
I have purchase two SPA525G2 phones. both are on the last firmware.
I setup SIP info and both phones are working.
I don't have a UNIFIED device and not planning to purchase one.
the question is how can I setup both phones (more than one, in case I need to add additional phones) to ring at the same time????
as of now only the last registered phone will ring, but I can use the second one to make outgoing phone calls.
and the second question is how can I setup extension numbers and call one phone from another?
your help is appreciated
thank you,
cg
12-11-2014 12:04 PM
Unfortunately that behavior is by design for the SIP protocol.
If you are happy to try a DIY approach you could install Asterisk or another free PBX solution on some spare hardware. This will then give you maximum flexibility over that sort of thing. It becomes more useful the more phones/external numbers you have
You can establish the SIP registration for on the Asterisk server, and then ring any number of internal phones that you choose there is an incoming call by adding a simple dialplan entry utilizing the Asterisk 'Dial' Application, eg:
[incoming]
exten => 123456,1,Dial(SIP/11&SIP/12&SIP/13,300,tT)
12-12-2014 06:05 AM
Is Asterisk free?
What will be a typical installation topology?
Can I install it on a Window box, as I don't have any experience with Linux.
Can I keep my Cisco phones? or I need to purchase other types
12-12-2014 12:27 PM
Unfortunately that behavior is by design for the SIP protocol.
I disagree. SIP protocol doesn't limit the number of devices registered with the same credentials as far as I know. Such limit (if any) is implementation dependent. If more than one device registration is supported, then all devices should ring (note that Asterisk doesn't allow multiple registration at the same time).
This notice will not help cg, of course. If it's provider allow just one registration only, then two phones can't be registered at the same time directly. A intermediate switch, like Asterisk or so is required - as you suggested,
12-12-2014 01:42 PM
I like this one better. I will call my provider to see if I can register two or more devices at the same time.
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