Configure SIP compression mode
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\lync Options
sipcompression enum - Always disabled
->
0 - Always enabled
->
1 - Based on adaptor speed (default)
->
2 - Based on ping round-trip time
->
3
Description
Defines when to turn on SIP compression. Default: Based on adaptor speed. Setting this policy may cause an increase in sign-in time.