Grandstream Handytone-486




  • 1 Power (5V)
  • 1 RJ45 WAN
  • 1 RJ45 LAN
  • 1 RJ11 FXS
  • 1 RJ11 PSTN (Not a true FXO -not usable via SIP, only used as a fallback for power failure, etc)

Basically this is the big brother of Grandstreams Handytone-286. The big difference is that you can hook your regular phone line in there and that it can act as a NAT Router in your home.

The LAN port can either be switched or NAT'd behind the WAN port. (Configurable. Very cool. The HT-488 only does NAT.)

While unpowered, the PSTN RJ11 is directly connected to the FXS RJ11.

When powered, the analog phone is is disconnected from the PSTN line. Dialing "*00" (configurable) causes a relay to join the analog phone to the PSTN to force outgoing calls via PSTN. Otherwise dialing is done via the FXS VOIP.

When a call arrives via the FSX (VOIP) port or the PSTN port, the attached analog phone rings. CallerID is passed through from the PSTN line and, if provided on the VOIP call, is generated out down the analog line to your CallerID-capable analog phone.

  • The "early dial" feature does not work. E.g. if you want it to pass each dialed key to the PBX as it is pressed rather than taking your whole number (followed by the '#" key or a 4-second timeout) before sending to the PBX, it doesn't work. Well known Grandstream bug in all of their products. With Asterisk, pressing the 2nd digit with early dial enabled, causes an instant dial failure.
  • Call forwarding will forward calls even if no number was specified to forward them too. Look for this if you're getting "302 temporarily moved" SIP responses, especially if they're unconditional.

Major oversight:
  • Unlike the HT-488, the only way for the analog phone to access the PSTN line on the HT-486 is via the "*00" prefix. The HT-488 allows up to 4 other programmable numbers (like '911', duh) to automatically use the PSTN line.

Grandstream's page about the HandyTone-486

Grandstream HandyTone-486 Review

Grandstream Support Forum

Available from:

Configuration Geometries:

LAN inhabitant with NAT router:

phone Internet
line |
| (WAN)
| NAT Router
| (LAN)
| |
(line) (wan)--+-----other devices
(phone) (lan)

LAN using the Grandstream as a NAT router:

phone Internet
line |
| (WAN)
| Gateway
| (LAN)
| |
(line) (wan)
(phone) (lan)
| |
handset other devices

See Also

Go back to VOIP Gateways

Created by: Marlow, Last modification: Mon 11 of Jun, 2012 (05:49 UTC) by admin
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