Grandstream HT801/HT802 Analog Telephone Adaptors User Guide
This guide provides comprehensive instructions for setting up, configuring, and using the Grandstream HT801 and HT802 Analog Telephone Adaptors.
Document Purpose
This document describes the basic concept and tasks necessary to use and configure your HT801/HT802. It covers connecting, configuring, basic operations, and call features. Download the latest version from grandstream.com/support.
This guide covers the following topics:
- Product overview.
- Getting started.
- Configuration guide.
- Call features.
- Call operations.
- Upgrading and provisioning.
- Restore factory default settings.
Change Log
This section documents significant changes from previous versions of the user guide. Only major new features or updates are listed.
Firmware Version 1.0.33.4
No major changes.
Firmware Version 1.0.31.1
No major changes.
Firmware Version 1.0.29.8
No major changes.
Firmware Version 1.0.27.2
No major changes.
Firmware Version 1.0.25.5
No major changes.
Firmware Version 1.0.23.5
No major changes.
Firmware Version 1.0.21.4
Added support for "Play Busy Tone When Account is unregistered" (Placing a phone call).
Firmware Version 1.0.19.11
No major changes.
Firmware Version 1.0.17.5
No major changes.
Firmware Version 1.0.15.4
No major changes.
Firmware Version 1.0.13.7
Added support to verify if the configured Gateway is on the same subnet as the configured IP address.
Firmware Version 1.0.11.6
No major changes.
Firmware Version 1.0.10.6
Added support for codec G722.
Firmware Version 1.0.9.3
No major changes.
Firmware Version 1.0.8.7
Added support for device upgrades via FTP/FTPS server.
Firmware Version 1.0.5.11
Changed default "Upgrade Via" from HTTP to HTTPS. Added support for 3-level access through RADIUS authorization (Admin, User, Viewer).
Firmware Version 1.0.3.7
No major changes.
Firmware Version 1.0.2.7
No major changes.
Firmware Version 1.0.2.3
No major changes.
Firmware Version 1.0.1.9
This is the initial version.
GUI Interface Examples
Download GUI screenshots from: ht80X_web_gui.zip
- Screenshot of Login Page
- Screenshots of Status Page
- Screenshots of Basic Settings Page
- Screenshots of Advanced Settings Page
- Screenshots of FXS Port 1 Page
- Screenshots of FXS Port 2 Page
Welcome
The HT801/HT802 analog telephone adaptors provide transparent connectivity for analog phones and faxes to the world of internet voice. They are an effective and flexible solution for accessing internet-based telephone services and corporate intranet systems. This manual will help you learn how to operate and manage your adaptor, including its features like simple installation, 3-way conferencing, and direct IP-IP Calling. The HT801/HT802 are easy to manage and configure, designed as an affordable VoIP solution for both residential users and teleworkers.
Product Overview
The HT801 is a one-port analog telephone adapter (ATA), while the HT802 is a 2-port ATA. They enable users to create a high-quality, manageable IP telephony solution for residential and office environments. Their compact size, voice quality, advanced VoIP functionality, security protection, and auto-provisioning options allow users to leverage VoIP on analog phones and enable service providers to offer high-quality IP service. The HT801/HT802 are ideal for individual use and large-scale commercial IP voice deployments.
Feature Highlights
The following table contains major features of HT801 and HT802:
HT801 | HT802 |
---|---|
1 SIP profile through 1 FXS port | 2 SIP profiles through 2 FXS ports on HT802 and single 10/100Mbps port on both models. |
3-way voice conferencing. | 3-way voice conferencing. |
Wide range of caller ID formats. | Wide range of caller ID formats. |
Advanced telephony features, including call transfer, call forward, call-waiting, do not disturb, message waiting indication, multi-language prompts, flexible dial plan and more. | Advanced telephony features, including call transfer, call forward, call-waiting, do not disturb, message waiting indication, multi-language prompts, flexible dial plan and more. |
T.38 Fax for creating Fax-over-IP and GR-909 Line Testing Functionalities. | T.38 Fax for creating Fax-over-IP and GR-909 Line Testing Functionalities. |
TLS and SRTP security encryption technology to protect calls and accounts. | TLS and SRTP security encryption technology to protect calls and accounts. |
Automated provisioning options include TR-069 and XML config files. | Automated provisioning options include TR-069 and XML config files. |
Failover SIP server automatically switches to secondary server if main server loses connection. | Failover SIP server automatically switches to secondary server if main server loses connection. |
Use with Grandstream's UCM series of IP PBXs for Zero Configuration provisioning. | Use with Grandstream's UCM series of IP PBXs for Zero Configuration provisioning. |
HT801/HT802 Technical Specifications
The following table summarizes technical specifications, including protocols, voice codecs, telephony features, languages, and upgrade/provisioning settings.
Interfaces | HT801 | HT802 |
---|---|---|
Telephone Interfaces | One (1) RJ11 FXS port | Two (2) RJ11 FXS ports. |
Network Interface | One (1) 10/100Mbps auto-sensing Ethernet port (RJ45). | |
LED Indicators | POWER, INTERNET, PHONE | POWER, INTERNET, PHONE1, PHONE2. |
Factory Reset Button | Yes. | Yes. |
Voice, Fax, Modem | HT801 | HT802 |
Telephony Features | Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference. | |
Voice Codecs | G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, G722, iLBC, OPUS, dynamic jitter buffer, advanced line echo cancellation. | |
Fax over IP | T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through. | |
Short/Long Haul Ring Load | 5 REN: Up to 1km on 24 AWG. | 2 REN: Up to 1km on 24 AWG. |
Caller ID | Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID. | |
Disconnect Methods | Busy Tone, Polarity Reversal/Wink, Loop Current. | |
Signaling | HT801 | HT802 |
Network Protocols | TCP/IP/UDP, RTP/RTCP, FTP/FTPS, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069, DDNS. | |
QoS | Layer 3 (ToS, DiffServ, MPLS). | |
DTMF Methods | In-audio, RFC2833 and/or SIP INFO. | |
Provisioning and Control | HTTP, HTTPS, FTP, FTPS, SSH, Telnet, TFTP, TR-069, secure and automated provisioning using AES encryption, syslog. | |
Security | HT801 | HT802 |
Media | SRTP. | |
Control | TLS/SIPS/HTTPS/SSH/Telnet. | |
Management | Syslog support, SSH, Telnet remote management using web browser. | |
Physical | HT801 | HT802 |
Universal Power Supply | Input: 100-240VAC, 50-60Hz. Output: 5.0VDC/1.0A. | |
Environmental | Operational: 32° – 104°F (0° – 40°C). Storage: 14° – 140°F (-10° – 60°C). Humidity: 10 – 90% Non-condensing. | |
Dimensions and Weight | 100mm x 100mm x 29.5mm; 102g | 100mm x 100mm x 29.5mm; 114g (without package). |
Compliance | HT801 | HT802 |
Compliance | FCC Part15B, EN55032, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1, AS/NZS CISPR22, AS/NZS60950.1, S003 (HT801); FCC 15B, AS/NZS CISPR22, AS/NZS60950, EN55022, EN55024, EN60950, EN61000-3-2, EN61000-3-3, UL (Power supply) (HT802). |
Getting Started
This chapter provides basic installation instructions and information for optimal performance.
Equipment Packaging
The HT801 ATA package contains:
- 1x HT801 unit
- 1x 5V Power Adapter
- 1x Ethernet Cable
- 1x Quick Installation Guide
- 1x GPL Statement
The HT802 ATA package contains:
- 1x HT802 unit
- 1x 5V Power Adapter
- 1x Ethernet Cable
- 1x Quick Installation Guide
- 1x GPL Statement
Note: Check the package before installation. Contact your system administrator if anything is missing.
HT801/HT802 Ports Description
The back panel of the HT801 features:
- Internet Port: For connecting to a router or gateway via Ethernet RJ45 network cable.
- Micro USB Power DC: Connects the adapter to a PSU (5V – 1A).
- Phone (RJ-11 FXS Port): Used to connect analog phones/fax machines via RJ-11 telephone cable.
- Reset: Factory reset button, press for 7 seconds to reset factory default settings.
The back panel of the HT802 features:
- Internet Port: For connecting to a router or gateway via Ethernet RJ45 network cable.
- Micro USB Power DC: Connects the adapter to a PSU (5V – 1A).
- Phone 1 & 2 (RJ-11 FXS Ports): Used to connect analog phones/fax machines via RJ-11 telephone cable.
- Reset: Factory reset button, press for 7 seconds to reset factory default settings.
Port | Description |
---|---|
Phone for HT801 / Phone 1 & 2 for HT802 | Used to connect analog phones / fax machines using an RJ-11 telephone cable. |
Internet port | Used to connect to your router or gateway using an Ethernet RJ45 network cable. |
Micro USB Power | Connects the phone adapter to PSU (5V – 1A). |
Reset | Factory reset button, press for 7 seconds to reset factory default settings. |
Connecting HT801/HT802
Follow these steps to connect your HT801 or HT802:
- Insert a standard RJ11 telephone cable into the phone port and connect the other end to an analog telephone.
- Insert the Ethernet cable into the internet or LAN port and connect the other end to an uplink port (router or modem).
- Insert the power adapter into the HT801/HT802 and connect it to a wall outlet.
Power, Ethernet, and Phone LEDs will be solidly lit when the device is ready.
Diagram Description (Figure 5: Connecting the HT801/HT802): Shows a phone connected to the HT801/HT802's phone port, and the HT801/HT802 connected via Ethernet to an IP PBX or the Internet.
HT801/HT802 LEDs Pattern
The HT801 has 3 LED buttons, and the HT802 has 4 LED buttons to indicate device status.
Diagram Description (Figure 6: HT801/HT802 LEDs Pattern): Shows the top view of the HT801 and HT802 devices, highlighting the LED indicators.
LED Lights | Status |
---|---|
Power LED | Lights up when powered on; flashes when booting up. |
Internet LED | Lights up when connected to the network; flashes when data is sent or received. |
Phone LED for HT801 | Indicates status of the FXS port. |
Phone LED 1&2 for HT802 |
|
Configuration Guide
The HT801/HT802 can be configured via:
- The IVR voice prompt menu.
- The Web GUI using a PC's web browser.
Obtain HT801/HT802 IP Address via Connected Analogue Phone
By default, the device obtains an IP address from a DHCP server. To find the IP address:
- Connect a phone to the HT801/HT802.
- Press "***" (star key three times) to access the IVR menu.
- Listen for "Enter the menu option".
- Press "02" to hear the current IP address.
Understanding HT801/HT802 Interactive Voice Prompt Response Menu
The IVR menu allows simple device configuration. Pick up the handset and dial "***" to access it.
Menu | Voice Prompt | Options |
---|---|---|
Main Menu | "Enter a Menu Option" | Press "*" for next option, "#" to return to main menu. Enter 01-05, 07,10, 13-17,47 or 99 for menu options. Press "9" to toggle selection. |
01 | "DHCP Mode", "Static IP Mode" | If using "Static IP Mode", configure IP using menus 02 to 05. |
02 | "IP Address " + IP address | If using "Dynamic IP Mode", IP is obtained from DHCP. If using "Static IP Mode", enter a 12-digit IP address. Reboot required for changes to take effect. |
03 | "Subnet " + IP address | Same as menu 02. |
04 | "Gateway " + IP address | Same as menu 02. |
05 | "DNS Server " + IP address | Same as menu 02. |
07 | Preferred Vocoder | Press "9" to move through options: PCM U / PCM A, iLBC, G-726, G-723, G-729, OPUS, G722. |
10 | "MAC Address" | Announces the unit's MAC address. |
13 | Firmware Server IP Address | Announces current Firmware Server IP address. Enter new IP address. |
14 | Configuration Server IP Address | Announces current Config Server Path IP address. Enter new IP address. |
15 | Upgrade Protocol | Choose between TFTP, HTTP, HTTPS, FTP, FTPS. Default is HTTPS. |
16 | Firmware Version | Displays firmware version information. |
17 | Firmware Upgrade | Choose upgrade mode: "always check", "check when pre/suffix changes", "never upgrade". |
47 | "Direct IP Calling" | Enter target IP address for direct IP calls. |
86 | Voice Mail | Access voice mail messages. |
99 | "RESET" | Press "9" to reboot. Enter encoded MAC address to restore factory defaults. |
701-702 | Phone calls between different ports of the same HT802 | HT802 supports inter-port calling. Dial ***70X (X is port number). |
"Invalid Entry" | Automatically returns to main menu. | |
"Device not registered" | Played after off-hook if device is not registered and "Outgoing Call without Registration" is NO. |
Tips for using voice prompt:
- "*" moves to the next option, "#" returns to the main menu.
- "9" acts as ENTER to confirm or toggle.
- Digit sequences have fixed lengths (2 for menu, 12 for IP address). Pad IP addresses with leading zeros if less than 3 digits per octet (e.g., 192.168.0.26 becomes 192168000026).
- Key entries cannot be deleted but errors may be detected.
Configuration via Web Browser
The HT801/HT802 has an embedded Web server for configuration via a web browser (e.g., Chrome, Firefox, IE).
Accessing the Web UI
- Connect your computer to the same network as the HT801/HT802.
- Ensure the HT801/HT802 is booted up.
- Check the IP address using the IVR (see "Obtain HT801/HT802 IP Address via Connected Analogue Phone").
- Open a web browser on your computer.
- Enter the HT801/HT802's IP address in the browser's address bar.
- Enter the administrator's password to access the Web Configuration Menu.
Notes:
- Your computer must be on the same sub-network as the HT801/HT802.
- Recommended Web browsers: Microsoft Internet Explorer (v10+), Google Chrome (v58.0.3+), Mozilla Firefox (v53.0.2+), Safari (v5.1.4+), Opera (v44.0.2+).
Web UI Access Level Management
Default passwords for login:
User Level | Password | Web Pages Allowed |
---|---|---|
End User Level | 123 | Only Status and Basic Settings can be modified. |
Administrator Level | admin | All pages |
Viewer Level | viewer | Only checking, Not allowed to modify content. |
Passwords are case-sensitive, up to 25 characters.
To save changes, press "Update" or "Apply". Reboot the device if necessary for changes to take effect (especially for Advanced Settings and FXS Port pages).
Saving the Configuration Changes
Pressing "Update" saves changes but does not apply them until "Apply" is clicked. You can directly press "Apply". It is recommended to reboot or power cycle the device after applying changes.
Changing Admin Level Password
- Access the web UI via IP address.
- Enter admin password (default: admin).
- Navigate to Advanced Settings > Admin Password.
- Enter and confirm the new admin password.
- Press Apply.
Diagram Description (Figure 7: Admin Level Password): Shows the interface for changing the Admin Level Password.
Changing User Level Password
- Access the web UI.
- Enter admin password (default: admin).
- Navigate to Basic Settings > End User Password.
- Enter and confirm the new user password.
- Press Apply.
Diagram Description (Figure 8: User Level Password): Shows the interface for changing the User Level Password.
Changing Viewer Password
- Access the web UI.
- Enter admin password (default: admin).
- Navigate to Basic Settings > New Viewer Password.
- Enter and confirm the new viewer password.
- Press Apply.
Diagram Description (Figure 9: Viewer Level Password): Shows the interface for changing the Viewer Level Password.
Changing HTTP Web Port
- Access the web UI.
- Enter admin password (default: admin).
- Navigate to Basic Settings > Web Port.
- Change the current port (accepted range: 1-65535).
- Press Apply.
Diagram Description (Figure 10: Web HTTP Port): Shows the Web/SSH Access settings, including HTTP Web Port.
NAT Settings
For devices behind a firewall, using a STUN Server is recommended. Settings include:
- STUN Server: Enter a STUN server IP or FQDN. Leave blank if using a public IP.
- Use Random SIP/RTP Ports: Set to "Yes" for multiple IP devices on the same network; "No" for a public IP address.
- NAT traversal: Set to "Yes" if the gateway is behind a firewall on a private network.
DTMF Methods
Supported DTMF modes:
- DTMF in-audio
- DTMF via RTP (RFC2833)
- DTMF via SIP INFO
Set priority based on server DTMF settings.
Preferred Vocoder (Codec)
Supported voice codecs:
- PCMU/A (or G711μ/a)
- G729 A/B
- G723.1
- G726
- iLBC
- OPUS
- G722
Configuring the HT801/HT802 Through Voice Prompts
Use the IVR menu for configuration. Refer to "Understanding HT801/HT802 Interactive Voice Prompt Response Menu" for details.
- DHCP MODE: Select voice menu option 01.
- STATIC IP MODE: Select voice menu option 01, then use options 02-05 for IP address, Subnet Mask, Gateway, and DNS server.
- FIRMWARE SERVER IP ADDRESS: Select voice menu option 13.
- CONFIGURATION SERVER IP ADDRESS: Select voice menu option 14.
- UPGRADE PROTOCOL: Select menu option 15 (TFTP, HTTP, HTTPS, FTP, FTPS). Default is HTTPS.
- FIRMWARE UPGRADE MODE: Select voice menu option 17 ("Always check", "check when pre/suffix changes", "never upgrade").
Register a SIP Account
The HT801 supports 1 SIP account per FXS port; the HT802 supports 2 SIP accounts per FXS port. Register via the web interface:
- Access the web UI.
- Enter admin password (default: admin) and Login.
- Go to FXS Port (1 or 2) pages.
- In the FXS Port tab, configure:
- Account Active: Yes.
- Primary SIP Server: SIP server IP address or FQDN.
- Failover SIP Server: Failover SIP Server IP address or FQDN (optional).
- Prefer Primary SIP Server: Yes/No (No if no Failover SIP Server).
- Outbound Proxy: Outbound Proxy IP Address or FQDN (optional).
- SIP User ID: Provided by VoIP service provider.
- Authenticate ID: SIP service subscriber's Authenticate ID.
- Authenticate Password: SIP service subscriber's account password.
- Name: Identifier for the user.
- Press Apply to save.
Diagram Description (Figure 11: SIP Accounts Settings): Shows the configuration interface for SIP accounts.
After configuration, verify registration status in Status > Port Status > Registration. It should display "Registered".
Diagram Description (Figure 12: Account Status): Shows the status of registered accounts.
Note: For HT802, simultaneous ring may have a one-second delay between rings on each phone if all FXS ports are registered.
Rebooting the HT801/HT802 from Remote
Press the "Reboot" button in the configuration menu. The web browser will show a confirmation message. Wait 30 seconds before logging in again.
Call Features
The HT801/HT802 support traditional and advanced telephony features.
Key | Call features |
---|---|
*02 | Forcing a Codec (per call): *027110 (PCMU), *027111 (PCMA), *02723 (G723), *02729 (G729), *027201 (iLBC), *02722 (G722). |
*03 | Disable LEC (per call). Dial "*03" + number. No dial tone is played. |
*16 | Enable SRTP. |
*17 | Disable SRTP. |
*30 | Block Caller ID (for all subsequent calls). |
*31 | Send Caller ID (for all subsequent calls). |
*47 | Direct IP Calling. Dial "*47" + "IP address". No dial tone is played. |
*50 | Disable Call Waiting (for all subsequent calls). |
*51 | Enable Call Waiting (for all subsequent calls). |
*67 | Block Caller ID (per call). Dial "*67" + number. No dial tone is played. |
*82 | Send Caller ID (per call). Dial "*82" + number. No dial tone is played. |
*69 | Call Return Service: Dial *69 to call the last incoming number. |
*70 | Disable Call Waiting (per call). Dial "*70" + number. No dial tone is played. |
*71 | Enable Call Waiting (per call). Dial "*71" + number. No dial tone is played. |
*72 | Unconditional Call Forward: Dial "*72" + forwarding number + "#". Wait for dial tone and hang up. |
*73 | Cancel Unconditional Call Forward: Dial "*73", wait for dial tone, then hang up. |
*74 | Enable Paging Call: Dial "*74" + destination phone number. |
*78 | Enable Do Not Disturb (DND): Rejects all incoming calls. |
*79 | Disable Do Not Disturb (DND): Accepts incoming calls. |
*87 | Blind Transfer. |
*90 | Busy Call Forward: Dial "*90" + forwarding number + "#". Wait for dial tone, then hang up. |
*91 | Cancel Busy Call Forward: Dial "*91", wait for dial tone, then hang up. |
*92 | Delayed Call Forward: Dial "*92" + forwarding number + "#". Wait for dial tone, then hang up. |
*93 | Cancel Delayed Call Forward: Dial "*93", wait for dial tone, then hang up. |
Flash/Hook | Toggles between active and incoming calls (call waiting tone). If not in conversation, toggles to a new channel for a new call. |
# | Pressing pound sign acts as a Re-Dial key. |
Call Operations
Placing a phone call
To make outgoing calls:
- Pick up the handset.
- Dial the number directly and wait 4 seconds (default "No Key Entry Timeout"), or
- Dial the number directly and press "#" (if configured as dial key).
Examples:
- Dial an extension (e.g., 1008) and press "#" or wait 4 seconds.
- Dial an outside number (e.g., (626) 666-7890). Dial prefix (e.g., 1+) then the number. Press "#" or wait 4 seconds. Check with your VoIP provider for prefix details.
Notes:
- Dial tone is played even if the SIP account is not registered.
- To play busy tone instead: Set "Play Busy Tone When Account is unregistered" to YES (Advanced Settings) and "Outgoing call without registration" to NO (FXS Port settings).
Direct IP calls
Allows calls between an analog phone (via FXS Port) and another VoIP Device without a SIP proxy.
Requirements:
- Both devices have public IP addresses, OR
- Both devices are on the same LAN using private IP addresses, OR
- Devices are connected via a router with port forwarding or DMZ.
Methods for Direct IP Calling:
Using IVR
- Pick up the analog phone and dial "***" to access the voice menu.
- Dial "47" for the direct IP call menu.
- Enter the IP address after the dial tone.
Using Star Code
- Pick up the analog phone and dial "*47".
- Enter the target IP address.
Note: Use "*" (encoding for ":") followed by the port number if specifying a port.
Examples of Direct IP Calls:
- For IP 192.168.0.160: Dial *47, then 192*168*0*160, press "#" or wait 4 seconds. (Default port 5060 used).
- For IP 192.168.1.20:5062: Dial *47, then 192*168*0*160*5062, press "#" or wait 4 seconds.
Note: Set "Use Random SIP/RTP Port" to "NO" for direct IP calls.
Call Hold
Press the "flash" button on the phone (or use "hook flash" if no flash button) to place a call on hold. Press again to resume. Hook flash can also drop a call.
Call Waiting
A 3-short-beep tone indicates an incoming call if Call Waiting is enabled. Press the "flash" button to toggle between the active call and the incoming call.
Call Transfer
Blind Transfer
To blind transfer a call from Phone B to Phone C (initiated by Phone A):
- On Phone A, press FLASH to get dial tone.
- Dial *87, then Phone C's number, then "#" or wait 4 seconds.
- Phone A hears dial tone and can hang up.
Attended Transfer
To attend transfer a call from Phone B to Phone C (initiated by Phone A):
- On Phone A, press FLASH to get dial tone.
- Phone A dials Phone C's number, then "#" or wait 4 seconds.
- If Phone C answers, Phone A and C converse. Phone A hangs up to complete the transfer.
- If Phone C does not answer, Phone A presses "flash" to resume the call with Phone B.
Note: If attended transfer fails and Phone A hangs up, the HT801/HT802 will ring Phone A back.
3-Way Conferencing
To add Phone C to a call between Phone A and Phone B (initiated by Phone A):
- Phone A presses FLASH to get dial tone.
- Phone A dials Phone C's number, then "#" or wait 4 seconds.
- If Phone C answers, Phone A presses FLASH to bring B and C into the conference.
- If Phone C does not answer, Phone A presses FLASH to talk to Phone B.
- Pressing FLASH during conference drops Phone C.
- If "Transfer on Conference Hang up" is "No", hanging up by Phone A terminates the conference. If "Yes", Phone A transfers B to C, and B and C continue the conversation.
Call Return
To call back the latest incoming number:
- Pick up the handset.
- After hearing dial tone, input "*69".
- The phone will automatically call back the last incoming number.
Inter-Port Calling
For the HT802 used as a standalone unit, make calls between connected phones using the IVR feature: Dial ***70X (X is the port number, e.g., ***701 for port 1).
Flash Digit Control
If "Flash Digit Control" is enabled in the web UI, call operations change:
- Call Hold: To hang up a current call (A-C) and resume held call (B), press "Flash + 1". To hold current call (A-C) and resume held call (B), press "Flash + 2".
- Attended transfer:
- Phone A presses FLASH for dial tone.
- Phone A dials Phone C's number, then "#" or wait 4 seconds.
- If Phone C answers, Phone A presses "Flash + 4" to complete transfer.
- 3-Way Conferencing:
- Phone A presses Flash for dial tone.
- Phone A dials C's number then "#" or wait 4 seconds.
- When Phone C answers, Phone A presses "Flash +3" to bring B and C into the conference.
Restore Factory Default Settings
Warning: Restoring defaults deletes all configuration. Backup settings first.
Using the Reset Button
- Unplug the Ethernet cable.
- Locate the reset hole on the back panel.
- Insert a pin and press for about 7 seconds.
- Remove the pin. All settings are restored.
Using the IVR Command
- Dial "***" for voice prompt.
- Enter "99" and wait for the "reset" prompt.
- Enter the encoded MAC address.
- Wait 15 seconds for reboot and restore.
Encode the MAC Address
Locate the 12-digit HEX MAC address on the unit. Use the following mapping:
Key | Mapping |
---|---|
0-9 | 0-9 |
A | 22 (press "2" twice) |
B | 222 |
C | 2222 |
D | 33 (press "3" twice) |
E | 333 |
F | 3333 |
Example: MAC address 000b8200e395 should be keyed as "0002228200333395".
Experiencing HT801/HT802
Visit www.grandstream.com for the latest updates, features, FAQs, documentation, and news.
Browse product documentation, FAQs, and the User and Developer Forum for answers to general questions.
For support, contact a Grandstream Certified Partner or Reseller, or reach out to technical support directly. You can also submit a trouble ticket online for in-depth support.
Thank you for purchasing the Grandstream analogue telephone adapter.