NEC NEAX 2000 IPS Maintenance Manual page 106

(4) Conditions for RTP monitoring
• SIP card (SC-3591 IPS IPTT PROG-B1 or later) is required for this feature.
• If the SIP card does not receive RTP for 10 seconds after establishing the path, the fault
information (fault kind 43) is registered and the path is released.
• When releasing the path by RTP monitoring via SIP card is provided (CM08>672: 0), the fault
information (fault kind 43) is registered whenever the path is released by RTP monitoring.
• Even if the releasing the path by RTP monitoring via SIP card is not provided (CM08>672: 0), the
fault information (fault kind 43) is registered only one time if the SIP card does not receive RTP
for 10 seconds after establishing the path. In this case, the path is not released.
• The RTP monitoring starts when one packet is received from the originating office after a path is
established. Even during ringing, RTP monitoring functions when sending/receiving RTP.
• When the path is released by RTP monitoring, the SIP call disconnect message is sent to the
originating office.
CHAPTER 1 MAINTENANCE SERVICE FEATURES
[Series 3700 R12.2 software required]
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VoIP LOG COLLECTION
NWA-008847-001 Rev.3.0
a6ch1001.fm
JULY/01/2006