Preparing to Run the Demo
Quality of Service
The application can set threshold values to monitor the quality of service during calls. A fault occurs when the result of a measurement of a QoS parameter crossed a predefined threshold. A success occurs when the result of a measurement of a QoS parameter did not cross a predefined threshold. The QoS parameters are measured during time intervals, starting when a call is established. The following parameters are supported:
•MediaAlarmLostPackets – monitors the number of lost IP packets during a call
•MediaAlarmJitter – monitors the jitter (as defined in RFC 1889) during IP transmission
QoS Attributes
The threshold for each QoS parameter is measured with the following six attributes:
•Threshold – defines when a QoS parameter is in a fault condition. A fault occurs when the result of a measurement of a QoS parameter crossed the Threshold value.
•DebounceOn – the time during which faults are measured (in msec., must be multiple of Interval)
•DebounceOff – the time during which successes are measured (in msec., must be multiple of Interval)
•Interval – the amount of time between two QoS parameter measurements (in multiples of 100 msec)
•Percent_Fail – used to detect failure condition, together with DebounceOn (expressed as a percentage of failures)
•Percent_Success – used to detect failure recovery, together with DebounceOff (expressed as a percentage of successes)
The default values are as follows:
| Threshold | DebounceOn | DebounceOff | Interval | Percent_ | Percent_ |
| Fail | Success | ||||
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Lost packets | 20 | 10000 | 10000 | 1000 | 60 | 40 |
Jitter | 60 | 20000 | 60000 | 5000 | 60 | 40 |
Sample Configuration File
################################################################################################
#IP Protocol :
#The IP Protocol used for opening the IP Line devices, values: H323, SIP, both
#DTMFmode
#possible options: #OutOfBand, inband, rfc2833
#
#Capability posiblities:
#g711Alaw
#g711Mulaw
#gsm
#gsmEFR
#g723_5_3k
#g723_6_3k
#g729a
#g729ab
#t38UDPFax
#
#Note: if you want to run the demo with coder g729 use:
#g729a for running with VAD disable
#and 729ab for running with VAD enable
#
# Caution:
16 | IP Media Server (Global Call) Demo Guide — November 2003 |
