Polycom IP 320 Administrator's Manual page 261

Attribute
call.dialtoneTimeOut
call.lastCallReturnString
call.callsPerLineKey
call.stickyAutoLineSeize
Permitted
Values Default
Null, positive 60
integer
string of *69
maximum
length 32
1 to 24 OR 34, 24, 8
OR 4
1 to 8
Null, 0, or 1 0
Interpretation
Time in seconds to allow the dial tone to be
played before dropping the call.
If set to 0, the call is not dropped.
If set to Null, call dropped after 60 seconds.
The string sent to the server when the user
selects the "last call return" action.
For the SoundPoint IP 650 and 670, the
permitted range is 1 to 34 and the default is 34.
For the SoundPoint IP 550 and 560, the
permitted range is 1 to 24 and the default is 24.
For the SoundPoint IP 32x/33x and 430, the
permitted range is 1 to 8 and the default is 4.
For all other phones, the permitted range is 1 to
8 and the default is 8.
This is the number of calls that may be active or
on hold per line key on the phone.
Note that this may be overridden by the
per-registration attribute of
reg.x.callsPerLineKey. Refer to
<reg/> on page A-134.
If set to 1, makes the phone use "sticky" line
seize behavior. This will help with features that
need a second call object to work with. The
phone will attempt to initiate a new outgoing call
on the same SIP line that is currently in focus on
the LCD (this was the behavior in SIP 1.6.5).
Dialing through the call list when there is no
active call will use the line index for the previous
call. Dialing through the call list when there is an
active call will use the current active call line
index. Dialing through the contact directory will
use the current active call line index.
If set to 0 or Null, the feature is disabled (this was
the behavior in SIP 1.6.6). Dialing through the
call list will use the line index for the previous
call. Dialing through the contact directory will use
a random line index.
Note: This may fail due to glare issues in which
case the phone may select a different available
line for the call.
Configuration Files
Registration
A - 81