ITU-T E.807 PDF

This Recommendation provides an introduction into call handling in cellular mobile voice service systems, but most importantly relates signalling procedures to major key performance indicators used in the assessment of voice service handling. Some causative factors that incapacitate mobile networks not to perform at their desired levels in consonance with meeting minimum communication standards in respect of guidance targets are discussed herein. This Recommendation is intended to be a key reference document for both mobile network operators and regulators.