Fax; Led Light Pattern Indication - Grandstream Networks HandyTone-486 User Manual

HandyTone-486 User Manual
5.4

FAX

HandyTone-486 supports FAX in two modes: T.38 (Fax over IP) and fax pass through. T.38 is the
preferred method because it is more reliable and works well in most network conditions. If the service
provider supports T.38, please use this method by selecting Fax mode to be T.38. If the service
provider does not support T.38, pass-through mode may be used. To send or receive faxes in fax pass
through mode, users will need to select all the Preferred Codecs to be PCMU/PCMA.
5.5

LED Light Pattern Indication

Following are the LED light pattern indications.
RED LED indicates abnormal status
Button flashes every 1 second
Button flashes every 2 seconds
(if DHCP is configured)
Button flashes every 4 seconds
(if SIP server is configured)
Button flashes every 6 seconds
Button flashes briefly
Red light steady.
Green LED indicates normal status
Button flashes every 2 second
Button flashes every 1/10 second
Button flashes every second
Green light steady
Ethernet link is down
DHCP Failed or WAN No Cable
HT–486 fails to register
Firmware Upgrading
No STUN responses
Device Malfunctions
Message Waiting Indication
Ringing
Ringing interval
In conversation
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