You can't modify that, however you can tweak the reminders to make sure they know of the parked calls.
park-slot
http://www.cisco.com/en/US/partner/docs/voice_ip_comm/cucme/command/reference/cme_p1ht.html#wp1106288
timeout seconds
(Optional) Sets the call-park reminder timeout in seconds. Range: 0 to 65535. This reminder sends a 1-second ring to the IP phone that parked the call and displays a message on the LCD panel of all phones in the Cisco Unified CME system, indicating that a call is on hold. By default, the reminder ring is sent only to the phone that parked the call.
limit count
(Optional) Sets a limit on the number of reminder or retry timeouts. Range: 1 to 65535.
HTH
java
If this helps, please rate
www.cisco.com/go/pdihelpdesk
HTH
java
if this helps, please rate