SIP/VoIP Application

SIP/VoIP Solution with abundant deploying practice

ISR is providing SIP stack, video solution for WiFi/3G softphone/multicast, interphone/TV Telephone application custom service. We deliver the best solutions for our customers to package and sell VoIP products and related services.

 

Solutions Provided

Our company has been recognized as a technical pioneer in the development of the SIP technology, which is the main breakthrough in the coming NGN age. Holding engineers and programmers with abundant developing experience, we can work all through the production precess, from basic design to developing, test and maintenance after release.

Developing Process

SIP Technology

SIP is the important technology elements in both NGN and IMS, it is also closely involved in mobile terminals. Based on the developing experience of carrier-grade SIP stack all by our own SIP engineers, we are confident to fulfill high requirements from our customer. We also hold wide knowledges including real time protocols including RTP RTCP, XMPP for instant messaging, UPnP, STUN and NAT networks.

SIP Developing Experiences and Cases

We have unique knowhows about interconnections among various servers and SIP clients.

SIP Customize

We can customize our PPPhone-SDK to interconnect with the targeting SIP servers.
Our client can upload location information to connected wireless LAN access point, the data can also be used by applications other than SIP based softphone. Besides our developed SIP client applications that support most of the operation systems, we can also provide porting services.

 

SIP Server

  1. B2BUA Server Development

    2. B2BUA server aims at bridging the difference in SIP protocol.
    SIP B2BUA

    Click here for detailed case studies.

    B2BUA functioning in an Click-to-Call system
    click2call

    • SIP proxy server development
    • Media gateway server development
    • Voice cast server development
    • Open source SIP server customize

    SER, Asterisk, etc

     

XMPP Application

XMPP as instant messaging protocol has gained a lot of attentions. XMPP is extended from the protocol used by IM software "Jabber" developed by open source community. ISR provides voice supported instant messaging application development and XMPP introduction support based on XMPP technology.
SIP XMPP
  • Communication
  • instant messaging
  • Presence information exchange
  • Others
 

Small scale CTI system

Outbound call system with in-store archived customer information.

CTI System

Click here for detailed case studies

 
 
 

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