NEC Univerge SV9300 - TO DOWNLOAD A FILE

Issue 1.0
SIP Trunk Programming Guide 35
Table 2 Troubleshooting Guide
Issue Cause Remedy
No Calls IN/Out
 Router Configuration  Check Router Configuration
 NEC Configuration  Check NEC Configuration
 Unqualified IP Address  Note WAN IP Address and Contact Provider
No Calls Out
 NEC Configuration  Check NEC Configuration
 Unqualified IP Address  Note WAN IP Address and Contact Provider
No Calls In
 NEC Configuration  Check NEC Configuration
 Unqualified IP Address  Note WAN IP Address and Contact Provider
One-Way Audio
 NEC Configuration  Check NEC Configuration
Echo
 Excessive Delay  Check LAN and WAN for high latency
 Echo Cancellation Issue
 Check Echo settings and/or consult your
SIP trunk provider
Call Dropping
 Internet Access Issues  Call Internet Access Provider
 Extreme Latency on LAN  Check Latency on LAN
 SIP issue  Contact Provider
Static or HUM on Phones
 Power issue
 Check power if using AC, should not be
issue in PoE
Missing Parts of Words
 Packet Loss or Latency on LAN  Check LAN
 Packet Loss or Latency on WAN  Check with Internet Access Provider
 Jitter Buffer Configuration  Check with NEC