NEC UNIVERGE SV9100 Configuration Manual page 37

Issue 1.0
Issue
No Calls IN/Out
No Calls Out
No Calls In
One-Way Audio
Echo
Call Dropping
Static or HUM on Phones
Missing Parts of Words
28
Table 4 Troubleshooting Guide
Cause
Router Configuration
m
NEC Configuration
m
Unqualified IP Address
m
NEC Configuration
m
Unqualified IP Address
m
NEC Configuration
m
Unqualified IP Address
m
NEC Configuration
m
Excessive Delay
m
Echo Cancellation Issue
m
Internet Access Issues
m
Extreme Latency on LAN
m
SIP issue
m
Power issue
m
Packet Loss or Latency on LAN
m
Packet Loss or Latency on WAN
m
Jitter Buffer Configuration
m
Remedy
Check Router Configuration
m
Check NEC Configuration
m
Note WAN IP Address and Contact Provider
m
Check NEC Configuration
m
Note WAN IP Address and Contact Provider
m
Check NEC Configuration
m
Note WAN IP Address and Contact Provider
m
Check NEC Configuration
m
Check LAN and WAN for high latency
m
Check Echo settings and/or consult IDT/
m
Net2Phone
Call Internet Access Provider
m
Check Latency on LAN
m
Contact Provider
m
Check power if using AC, should not be
m
issue in PoE
Check LAN
m
Check with Internet Access Provider
m
Check with NEC
m
SIP Trunking Service Configuration Guide
IDT/Net2Phone