In the IP Office environment, Avaya J169/J179 IP Phones use CCMS over SIP mode which provides an extended feature set.
In the Avaya Aura® environment, the lines are numbered in rows. You can scroll from the top right line to the top left one, then you are switched to the row below.
In CCMS mode, the lines are numbered in columns. First, you can scroll from top to bottom of the left column, then you are switched to top of the right column.
Important:
There is no icons support in CCMS mode, the text labels start at the beginning of the line.
