Centrex or PBX : the impact of IP /

समान संसाधन

• The road to IP Telephony : how Cisco Systems migrated from PBX to IP Telephony /
  द्वारा: 416294 Carhee, Stephanie L.
  प्रकाशित: (2004)
• VoIP emergency calling : foundations and practice /
  द्वारा: Wolf, Karl Heinz, 1982-, और अन्य
  प्रकाशित: (2011)
• A Voice over IP Architecture in UTM : Cost Optimization and Barriers of Adoption /
  द्वारा: Hamidreza Mohajeri, 1986-, author, और अन्य
  प्रकाशित: (2013)
• A Voice over IP Architecture in UTM : Cost Optimization and Barriers of Adoption /
  द्वारा: Hamidreza Mohajeri, 1986-, author, और अन्य
  प्रकाशित: (2013)
• IP telephony : deploying voice-over-IP protocols /
  द्वारा: 377594 Hersent, Olivier, और अन्य
  प्रकाशित: (2005)