Specifications

Appendix A
Alti-IP 600 Administration Manual 37
Poor voice quality. • Make sure a switch is used, rather than a hub,
in the corporate LAN.
• G.711 provides better voice quality.
• If VoIP is set up over WAN, set priority
queuingontheWANrouter.
• Make sureWAN 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.
Register failed. • Check to make sure the extension number and
extension password is set up properly and that
the IP extension is enabled.
• Check to make sure the IP Phone Services is
startedinAltiWare.
• If IP Phone is associated with a physical phone
(with the same extension number), use #27 to
activate the IP Phone to normal operating
mode.