Cite
MLA Citation
Flavio E Goncalves and Bogdan-Andrei Iancu. Building Telephony Systems with OpenSIPS - Second Edition. Birmingham : Packt Publishing, 2016. http://access.bl.uk/ark:/81055/vdc_100035535011.0x000001
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Flavio E Goncalves and Bogdan-Andrei Iancu. Building Telephony Systems with OpenSIPS - Second Edition. Birmingham : Packt Publishing, 2016. http://access.bl.uk/ark:/81055/vdc_100035535011.0x000001