It is an extension of mobility to a VoIP network.
Which the mobile connected with the VoIP network,turns the mobile device into a standard Session Initiation Protocol(SIP) client.
the mobile handset operate as a Global System for Mobile communications(GSM) or (CDMA) based device.
reference from:
http://en.wikipedia.org/wiki/Mobile_VoIP
last update:3 August 2008
Which the mobile connected with the VoIP network,turns the mobile device into a standard Session Initiation Protocol(SIP) client.
the mobile handset operate as a Global System for Mobile communications(GSM) or (CDMA) based device.
reference from:
http://en.wikipedia.org/wiki/Mobile_VoIP
last update:3 August 2008
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