VoIP Phones - Grandstream HT8xx

Back up to the VoIP Configuring page
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Revision as of 12:19, 8 November 2018 by Adsb (talk | contribs) (Mention the internal IVR server which enables you to find the IP address, and document a couple of config options which can reduce surprises.)

Grandstream HT801.png


Feature Notes
Supports 302 Redirect ?
Tested on FireBrick SIP Server No
IPv6 Support Yes

This is based on the author's experience of the HT801 (bought new in Sep 2018), which is a small unit which provides 1 FXS port and no FXO ports. It does IPv6. Similar units are the HT802 (which has 2 FXS ports), and the HT81x series (which adds a NAT router, and is available with different numbers of FXS ports).

If supplied without a Quick Start Guide, connect to a router which acts as a DHCP server and connect a telephone to the unit. Then dial '***' to access the internal Interactive Voice Response (IVR) system. '02' will read out the unit's IP address(es). Point a web browser at one of those addresses, and login as 'admin','admin'.

  • Basic Settings, Internet Protocol, select Both, prefer IPv6 (or, if you're brave, select IPv6 Only)
  • See https://www.ukvoipforums.com/viewtopic.php?t=1061 for UK settings (although you might want to set the NTP Server to time.aa.net.uk as that has IPv6 addresses)
  • Can support pulse dialling handsets - FXS Port, Enable Pulse Dialing, select Yes. As a bonus, this allows a pulse dialling handset to interact with IVR systems - at least until the system asks you to press '*' or '#'.
  • Can send BT CLID to handsets, see UK settings link above

A couple of personal favourite config options:

  • There's a confusingly explained option under FXS Port labelled Use # as Dial Key, explained as if set to Yes, "#" will function as the "(Re-)Dial" key. If set to No the # key works as a normal key, if set to Yes it acts as a special key variously named Send or Dial which can be used as Redial last number called - but that'll be the last number dialled by the unit, not the last number dialled by the phone concerned. I set it to No to avoid surprises.
  • Also under FXS Port are some options regarding Hook Flash. This corresponds to what the UK calls Timed Break Recall. I set the option Enable Hook Flash to No - otherwise you can think you've hung up on a call by tapping the hook switch but you haven't (and your phones ring to remind you - so you pick the handset up and find the other party is confused too).

Firewall & Security

  • You will also want to set up firewall rules, as per the VoIP Firewall page.
  • Also see the VoIP Security page for information about securing your VoIP service.
  • You can have an IP address whitelist and blacklist for web, telnet, and ssh access to the ATA. Unfortunately it only accepts IPv4 address ranges. Basic Settings, Web/SSH Access, White List for WAN Side, similar for blacklist.
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