Ralph, was this the COS option you were thinking of?
After Answer Display Time:
Enter the length of time (0-60 sec) a call path or hunt group name is displayed on a Mitel display telephone after an ACD 2000 agent answers a call.
A value of 0 causes the path to be displayed for the duration of the call after the agent answers.
For NameTag hunt group, the value applies whether the call is being answered for the first time, as the result of a local transfer or forward, or as the result of a recall or hold retrieve.
Default value is BLANK