VoIP Testing
For Voice over IP (VoIP) systems, TRaC offers both regulatory testing (where applicable) as well as testing for VoIP Acoustic Performance, VoIP Voice Quality and VoIP Quality of Service. In addition TRaC can perform tests to check for Acoustic Shock.
Typical Products
VoIP equipment with headsets or handsets. Further details of VoIP Technology »
Regulatory Testing
Typically regulatory testing around the world is based on protection of the public network rather than performance. TRaC can offer testing to these regulatory requirements.
Below are list a selection of regulatory standards that TRaC tests for VoIP equipment.
Country | Standard Ref | Title |
Australia | AS/ACIF S004: 2004 AS/ACIF S004: 2006 | Customer Access Equipment for connection to a Telecommunications Network |
New Zealand | PTC220 | Requirements for Private Voice Networks connected to the PSTN/ISDN |
US | TIA/EIA-810-A | Transmission requirements for Narrowband Voice Over IP and Voice Over PCM Digital Wireline Telephones |
Conformance Testing
Of particular interest to our customers is the conformance testing that we perform for VoIP equipment. As mentioned above these tests are split into VoIP Acoustic Performance, VoIP Voice Quality and VoIP Quality of Service.
VoIP Acoustic Performance
Measurement | Description |
SLR | Send Loudness Rating |
RLR | Receive Loudness Rating |
Frequency Response | Measures the gain or attenuation of transmitters or receivers as a function of frequency |
STMR | Sidetone Masking Rating |
Distortion | Measures the total harmonic distortion of the transmitter and receiver (summed up to the 5th harmonic) |
Noise | Send Noise is the noise contributed to the line by the TE. Receiver Noise is the noise contributed at the ear of the TE. |
Acoustic Shock | Measures the maximum r.m.s. output sound pressure level to ensure that it meets with standardized requirements. |
VoIP Voice Quality
Standard | Title |
ITU-T P.862 | Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs |
VoIP Quality of Service
Parameter | Description |
Latency | The amount of time it takes for an IP packet to cross the WAN. |
Packet Loss | The chance of losing an IP packet while travelling through the WAN. |
Packet Effects | Dynamic IP packet routing effects, including out-of-order packets, duplicated packets, and IP fragmentation phenomena. |
Link Faults | Possible changes to bit streams and possible disconnections. |
Congestion | Sharp rises in WAN traffic, which may result in high latency or packet loss, or both, temporarily overriding the regular setting of latency and packet loss. |
The Complete Package
Testing at TRaC is only a small part of what we can do to aid you in achieving your "product to market" goals. The Approvals Group at TRaC offers a completely managed service for all key markets around the world. For further information on how they can assist you, see Global Approvals »
For further information on VoIP testing please 
contact us »
