Yealink CP860 [304/417] Packetization time

Yealink CP860 [304/417] Packetization time
Administrators Guide for CP860 IP conference phones
292
Codec
Algorithm
Reference
Bit Rate
Sample
Rate
Packetization
Time
15.2 Kbps
Packetization Time
Ptime (Packetization Time) 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. You can also
disable the ptime negotiation.
The attribute rtpmap is used to define a mapping from RTP payload codes to a codec,
clock rate and other encoding parameters.
The corresponding attributes of the codec are listed as follows:
Codec
Configuration Methods
Priority
G722
Configuration Files
Web User Interface
1
PCMU
Configuration Files
Web User Interface
2
PCMA
Configuration Files
Web User Interface
3
G729
Configuration Files
Web User Interface
4
G723_53
Configuration Files
Web User Interface
0
G723_63
Configuration Files
Web User Interface
0
G726-16
Configuration Files
Web User Interface
0
G726-24
Configuration Files
Web User Interface
0
G726-32
Configuration Files
Web User Interface
0
G726-40
Configuration Files
Web User Interface
0

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