Panasonic KX-TD816 User Manual page 163

Programming Guide References
[206] Outside-to-Outside Line Call Duration Time
[503] Call Transfer to Outside Line
[601] Class of Service
Features Guide References
Hold Recall
User Manual References
4.3.32 Conference
Class of Service (COS) is used to define the features which are allowed for a group of extensions. Refer to "Class of Service
*1
(COS)" in the Features Guide.
User Manual
Station Features and Operation (DPT/SLT)
163