ADB100
4th July 2007, 02:23 PM
On this page: http://msdn2.microsoft.com/en-us/library/aa926591.aspx it lists the default DSCP settings used by the RTC Client in Windows Mobile 6. The default DSCP value for SIP signalling an RTP media is 0x38 (or DSCP 56, IP Precedence 7). I wish to change this however adding the relevent values to the registry does not change what DSCP values are set; they always remain at 0x38:
REGEDIT4
[HKEY_LOCAL_MACHINE\Comm\RTC\QoS]
"Disabled"=dword:00000000
"DSCPSIP"=dword:00000018
"DSCPAudioRTP"=dword:0000002e
"DSCPAudioRTCP"=dword:0000002e
This should in theory set DSCP 24 (0x18) or SIP Signalling packets and DSCP 46 (0x2e) for RTP & RTCP packets. I have made the registry changes, left it for a while and soft-reset. Following bootup I have checked that the settings are stored in the registry, however if I make a call and capture the traffic I can still only see DSCP being set to 56 (0x38). Has anyone else played around with the QoS settings?
I am using version 5.2.318 (Build 15342) with the replacement VoIP files to get around the issue with L2TP/IPSec.
Andy
REGEDIT4
[HKEY_LOCAL_MACHINE\Comm\RTC\QoS]
"Disabled"=dword:00000000
"DSCPSIP"=dword:00000018
"DSCPAudioRTP"=dword:0000002e
"DSCPAudioRTCP"=dword:0000002e
This should in theory set DSCP 24 (0x18) or SIP Signalling packets and DSCP 46 (0x2e) for RTP & RTCP packets. I have made the registry changes, left it for a while and soft-reset. Following bootup I have checked that the settings are stored in the registry, however if I make a call and capture the traffic I can still only see DSCP being set to 56 (0x38). Has anyone else played around with the QoS settings?
I am using version 5.2.318 (Build 15342) with the replacement VoIP files to get around the issue with L2TP/IPSec.
Andy