0120-5609 0120-5609 S0120-56092017000200052 10.15446/ing.investig.v37n2.57664 Mexico Mexico Mexico Mexico Mexico 00 08 2017 00 08 2017 37 2 52 59

2013 2014 2007 13 6 6 303-9 2007 1 3 3 ETSI 2010 2007 2009 , 2012 ITU-T P.800 Rec. Series E 2008 ITU-T P.1080 Rec. Series G 2008 2010 6 2008 14 5 5 615-24 2008 2008 1804-8 2012 50 4 4 2012 3 2011 2009 , QoMEx 2009 7-12 2014 2007 , 2007 2 Pan American Health Organization 2014 2006 2006 198-201 2014 3 2 2 33-44 2012 2010 13 1 1 5-27