NEC Univerge SV9100 - Page 37

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