Specifications

Troubleshooting
44 IP 705 Manual
IP phone registered then
goes back to Basic mode
• Check network connectivity by pinging from
AltiServ to the IP phone.
• Check if IP Phone Service is running.
• Check if there is a duplicate IP address by
unplugging the Ethernet cable on the IP phone, then
pinging the IP 705 phone’s IP address.
• Check the extension’s IP address in AltiAdmin to
find out if another user is trying to log in using the
same extension number.
• Use #27 then Enter to log in again and see if the
problem persists.
No IP Address
• Check if DHCP is enabled. If YES, check network
connection. If NO, verify that your DHCP server is
correctly configured.
• Check if IP 705 phone’s IP address is configured.
One way connection
• Make sure firewall setting has all the TCP/UDP
ports required by AltiWare opened.
• If NAT is used, make sure NAT is enabled and NAT
address is set up correctly.
Phone does not show
anything on LCD display
• Check the power source to be sure the IP 705 phone
is receiving power.
Poor voice quality
• Make sure a Layer 3 Managed Ethernet switch is
used, rather than a hub or non-managed switch, in
the corporate LAN.
• G.711 provides better voice quality.
• If VoIP is set up over WAN, set priority queuing on
the WAN router.
• Make sure WAN QoS is okay by pinging a few
hundred packets from remote site and observe
packet loss and network latency.
• Adjust jitter buffer to accommodate network
latency.