On Sat, 3 Mar 2012, K bharathan wrote:
how can i put a sip proxy;
Depending on your OS and which proxy you want, it may be as simple as 'sudo yum -y install opensips'
how it differs from asterisk pbx;
I think the major distinction is 'who handles the signaling and who handles the media.' A SIP proxy usually only handles the signaling. A PBX usually handles both. Note that you can combine a SIP proxy and a RTP proxy. Then the distinction is based more on the feature set with a PBX having more features relating to handsets.
currently doing some test on asterisk; thru DSL connection the callers can hear only one way;asterisk pbx is behind NAT;
A common NAT problem. Using 'wireshark' to capture packets and analyze them may yield some clues. Recent discussions on this list incriminate SIP 'helpers' in some routers.
i am in search of a proper VOIP network ;appreciate some clues in this line
Every one of 'them' is different. How big of a system are you designing? Astlinux on a Soekris is great for a couple of simultaneous calls. Multiple OpenSIPS hosts fronting a farm of Asterisk hosts could probably handle a small nation.
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