Traffica for MGW
Monitor and analyze user plane
voice quality in real-time
Key benefits
24/7 real-time voice quality monitoring solution
User plane and control plane correlation offering
visibility of entire MSC Server System-based
networks
Scalable and high-capacity architecture – Traffica
for MGW can monitor up to ten MGWs or up to
120 000 simultaneous voice connections
24/7
Alarm thresholds and drill-in capability for
immediate corrective actions to be taken
voice quality
monitoring
Cost-efficient network-wide solution for MSC
Server System-based networks
Voice quality indicators
Mean opinion score
(MOS)
Quantifies the subjective
quality of speech in
communications
systems from 1 (worst)
to 5 (best)
Jitter
The delay variation
between received IP
packets or ATM cells;
may cause buffer
overflow resulting in
packet or cell loss
Frame erasure ratio
(FER)
The ratio of bad or lost
speech frames to total
transmitted speech
frames; an indicator of
radio connection quality
R-value
Expresses speech
quality from 1 (worst) to
100 (best)
IP packet loss ratio
The ratio of lost IP
packets to total
transmitted IP packets
Noise level
When disturbingly high
is reduced with noise
suppression techniques
Copyright © 2010. Nokia Siemens Networks. All rights reserved.
Speech levels
Above a specific dynamic
range (e.g., -20 to -15
dBm0) can cause
distortion in transmission
equipment; below, and
noise in the system
becomes unacceptable
Double talk
When one conversant
starts talking before the
other has finished
www.nokiasiemensnetworks.com
MOS Drill-in
5
5
5
MGW level
1
1
MGW West
5
1
MGW North
MGW East
5
Interface level
1
1
Nb-IP
5
5
Degraded MOS at
remote end IP
address 10.76.158.142
Iu-ATM
5
5
IP address level
1
1
10.76.158.14
10.76.158.146
1
1
10.76.158.142
10.76.158.130
If there are speech quality problems you can drill in to the
destination IP address level
IP packet loss
0.2%
0.2%
0.2%
MGW level
0%
0%
MGW North
MGW East
0%
MGW South
1%
1%
Interface level
0%
0%
Nb-IP
12%
Iu-IP
12%
IP address level
0%
0%
10.76.158.2
10.76.158.3
Severe packet loss at
destination IP
12%
address 10.76.158.3
0%
12%
0%
10.76.158.4
If there is excessive IP packet loss in the network, you can drill in to
the destination IP address level
Call details
If there are user
complaints, it is
possible to see call
details in both the
control plane and
the user plane
Voice quality
indicators
Call-related information
Proposed target values
Total FER
Call start time
Speech activity factor
Jitter
Location
IMSI
Subscriber A information
MOS value
Subscriber B information
MSS
MGW
10.76.158.5