Cite
APA Citation
Unknown (2008). Building telephony systems with OpenSER : a step-by-step guide to building a high-performance telephony system. Birmingham : Packt Publishing. http://access.bl.uk/ark:/81055/vdc_100035547932.0x000001
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Unknown (2008). Building telephony systems with OpenSER : a step-by-step guide to building a high-performance telephony system. Birmingham : Packt Publishing. http://access.bl.uk/ark:/81055/vdc_100035547932.0x000001