Measurement Setups in TEMS Investigation

78.4 Measurement Setups in TEMS Investigation

Audio quality measurement (AQM) in TEMS Investigation can be done in a number of contexts and hardware configurations. A summary of the possibilities is given in the following tables:

Currently Supplied Solutions

Service	Call Parties	Auxiliary Components	DL AQM Computed By	PESQ	POLQA	sQLEAR	Chapt. or Sect. Ref.
CS voice	Mobile to fixed	Audio Capturing Unit (ACU R2)	PC	y	y		"AQM with ACU R2"
	Mobile to fixed	On-device clients: CallGenerator	On-device clients or PC 1		y		"Setup for AQM"
	Mobile to mobile	Audio Capturing Unit (ACU R2); optionally, several PCs can be used	PC(s)	y	y		"AQM with ACU R2"
	Mobile to mobile	On-device clients: No auxiliary component	On-device clients or PC"Measurement Setups in TEMS Investigation"		y		"Setup for AQM"
VoIP/VoLTE	Mobile to mobile	PC VoIP client: 2 PCs used	PC at either end	y	y		"AQM for VoIP"
		On-device VoIP clients: No auxiliary components	On-device clients or PC 2	y	y		"Setup for AQM"
		On-device VoLTE clients: No auxiliary components	PC			y	"Setup for AQM"

Older Solutions

These are compatible with TEMS Investigation 23.3 but no longer supplied.

Service	Call Parties	Auxiliary Components	DL AQM Computed By			Chapt. or Sect. Ref.
CS voice	Mobile to fixed	CallGenerator; AQM modules	AQM modules	y		"Mobile-to-fixed Audio Quality Measurement with CallGenerator"
	Mobile to mobile	Audio Capturing Unit (TerraTec)	PC	y	y	"AQM for CS Voice with ACU TerraTec"
	Mobile to mobile	Mobile Receiving Unit (MRU)	AQM modules	y		"Mobile-to-mobile Audio Quality Measurement with MRU"