TOS bit setting (SCCP)

Posted: May 26, 2006 by sankar in Analog, ATA186, QOS

Default value :0x000068b8

 0110 1000 1011 1000 (ignoring leading 0's)

 0-7 digits represents RTP payload. Maps to DSCP 46 or TOS 5 (leading 3 digits 011)

8 – 15 digits represents Voice signalling. Maps to DSCP 26 or TOS 3 (leading 3 digits are 101)

To change the voice signalling to DSCP 24 (according to CM 4.1 specs) the new value of TOS is

0x000060b8     (Change bit 11)

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s