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We need a lightweight standard based VoIP web phone.
The phone must work with the industry standard SIP protocol and run from the Web page.
SIP and RTP stack compatible with any standard VoIP server or device like Cisco, Voipswitch, Asterix & FreeSWITCH
Standard java applet
Transport protocols: UDP, TCP, TLS, TCP tunnel
Codec: PCMU, PCMA, G.729 & GSM (G.723 & ILBC will be valued in the selection)
Possibility of Unlimited lines
Click to call
Server side integration using PHP
Integration with any webpage & browser
Customizable user interface, skins and languages
Flexibility (all parameters/behavior must be changed/controlled by applet parameters and from java script)