Alcatel-Lucent ALE M3 - Packetization Time (Ptime)

ALE M3-M5-M7-M8 DeskPhones Administrator Guide
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Note: X means account ID and it can be number 1~8 for M3/M5/M7, 1-20 for M8.
Parameter
AccountXAudioCodec
config.xml
Description
It configures the codec list which is supported by phone for accountX.
Permitted
Values
8 - pcma
0 - pcmu
9 - g722
18 - g729AB
98 - iLbc
125 - opus
Default
0;8;18;9;98
Web UI
Account → Codec → Audio Codec
Parameter
AccountXOpusBandwidth
config.xml
Description
It configures OPUS bandwith for accountX.
Permitted
Values
0 - Narrow Band
1 - Wide Band
2 - Super Wide Band
Default
1
Web UI
Account → Codec → OPUS Bandwidth
Parameter
AccountXIlbcFrameMode
config.xml
Description
It configures iLBC frame length for accountX.
Permitted
Values
20 - 20
30 - 30
Default
30
Web UI
Account → Codec → ILBC Frame Mode
7.8 Packetization Time (PTime)
PTime is a measurement of the duration (in milliseconds) of the audio data in each RTP packet sent to the
destination and defines how much network bandwidth is used for the RTP stream transfer. Before
establishing a conversation, codec and ptime are negotiated through SIP signaling. The valid values of ptime
range from 10 to 60, in increments of 10 milliseconds. The default ptime is 20ms.
7.8.1 Supported PTime of Audio Codec
The following table summarizes the valid values of PTime for each audio codec:
Codec
Packetization Time (Minimum)
Packetization Time (Maximum)
G722
10ms
40ms
PCMA
10ms
40ms
PCMU
10ms
40ms
G729
10ms
80ms
iLBC
20ms
30ms