Atec JDSU-SC-ADSL - Manual (Page 5)

COMMUNICATIONS TEST & MEASUREMENT SOLUTIONS
5
NID
NID
POTS
Splitter
Splice
Case
ATU-R
POTS
ADSL
MDF
Pedestal
DSLAM
POTS Switch
Data Network
POTS
ADSL
ATM
ATU-Cs
POTS
Splitter
NID
DLC
Cross
Box
Cross
Box
Network Last Mile
ADSL2+,
Data, IPTV
Copper, ADSL2+,
Data, IPTV
Copper, ADSL2+,
Data, IPTV Copper Copper
Home
With the IPTV software option, technicians can quickly verify the availability of
IPTV service and its required bandwidth. The quality of service (QoS) parameters,
such as continuity error, program clock reference (PCR) jitter, and packet
identifier (PID) map help indicate video stream quality problems. Content quality
issues are determined by the error indicator count, transport quality metrics can
be measured with the IP packet jitter and real-time transport protocol (RTP)
packet loss features, and the “zap-time” presented by the Internet group
management protocol (IGMP) or real-time streaming protocol (RTSP) latency
judges the transaction quality.