Panasonic KXTGP550 Administration Guide - Page 184
Value Format, Description, ToS field, DS field
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4.7.2 SIP Settings Value Format Description Integer Specifies the value to be stored in the ToS field in the IP header of SIP messages. Note • The structures of the ToS/DS field in an IP header are shown below. ToS field 0 1 2 Precedence 3 bits 3 4 5 6 7 Type of Service 4 bits Currently unused 1 bit DS field 0 1 2 3 4 5 6 7 DSCP 6 bits Currently unused 2 bits The ToS field consists of a 3-bit precedence, a 4-bit type of service, and a 1-bit unused field. The DS filed consists of a 6-bit DSCP and a 2-bit unused field. 184 Administrator Guide Document Version 2010-08
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Value Format
Integer
Description
Specifies the value to be stored in the ToS field in the IP header of SIP
messages.
Note
•
The structures of the ToS/DS field in an IP header are shown
below.
ToS field
Precedence
3
bits
Type of Service
4
bits
Currently
unused
1
bit
7
6
5
4
3
2
1
0
DS field
DSCP
6
bits
Currently
unused
2
bits
7
6
5
4
3
2
1
0
The ToS field consists of a 3-bit precedence, a 4-bit type of
service, and a 1-bit unused field.
The DS filed consists of a 6-bit DSCP and a 2-bit unused field.
184
Administrator Guide
Document Version
2010-08
4.7.2 SIP Settings