By default, active call connections are preserved for up to 120 minutes, after which they are automatically disconnected. Call connections on which the IP Office system cannot detect any activity are automatically disconnected after 10 minutes.

These timeouts can be adjusted using the following NoUser source numbers:

• PRESERVED_CONN_DURATION=<Minutes (1 to 120)>

  When System | Telephony | Telephony | Media Connection Preservation is enabled, active calls are preserved for up to 120 minutes before being disconnected.. This NoUser source number can be used to adjust the duration in the range 1 to 120 minutes.

• PRESERVED_NO_MEDIA_DURATION=<Minutes (1 to 120)>

  When System | Telephony | Telephony | Media Connection Preservation is enabled, calls on which no RTP, RTCP or speech is detected are disconnected after 10 minutes. This NoUser source number can be used to adjust the duration in the range 1 to 120 minutes.