Cite
HARVARD Citation
Unknown (2011) IP telephony interconnection reference : challenges, models, and engineering. [Online]. Boca Raton : CRC Press. Available from: http://access.bl.uk/ark:/81055/vdc_100045257479.0x000001
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Unknown (2011) IP telephony interconnection reference : challenges, models, and engineering. [Online]. Boca Raton : CRC Press. Available from: http://access.bl.uk/ark:/81055/vdc_100045257479.0x000001