Polycom G7500 Reference Manual page 13

Do_Not_Disturb
call.displayIconsInCall
Specifies whether to display onscreen graphics, including icons and help text, during calls.
1 (default)
0
call.maxTimeInCall
Sets the maximum number of hours allowed for a call.
When that time expires, you're prompted if you want to hang up. If you don't answer within one
minute, the call automatically ends. If you choose to stay in the call, you aren't prompted again.
8_hours (default)
1_hour
2_hours
3_hours
4_hours
5_hours
6_hours
7_hours
9_hours
10_hours
11_hours
12_hours
24_hours
48_hours
call.preferredPlaceACallNav
Specifies the default options that display on the local interface place a call screen.
keypad (default) - Displays recently-dialed numbers and a dialpad.
globaldir - Displays a screen for searching a directory. The multitiered directory (LDAP) root
entry displays at the top of the Contacts list, which combines your search results and favorites.
recentcalls - Lists previous calls in chronological order.
call.audioOnly.enable
Lets you place audio-only calls on the system.
1 (default)
0
call.h239.enable
Allows the use of a standards-based specification for parallel video streams (i.e., people and
content). Enable if you know call participants support H.239.
1 (default)
0
Polycom, Inc.
Call Parameters
11