Grandstream Networks HT- 502 User manual

Grandstream Networks, Inc.
HT– 502
Dual FXS Port
Analog Telephone Adaptor
HT–502 User Manual www.grandstream.com
Firmware Version 1.0.0.39 [email protected]

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TABLE OF CONTENTS
HT–502 User Manual
WELCOME....................................................................................................................................................4
SAFETY COMPLIANCES.................................................................................................................................4
WARRANTY..................................................................................................................................................4
CONFIGURE YOUR HT–502 .......................................................................................................................5
EQUIPMENT PACKAGING...............................................................................................................................5
CONNECT YOUR ATA ..................................................................................................................................5
CONFIGURE YOUR ATA ...............................................................................................................................6
Five easy steps to Configure the HT–502.............................................................................................6
PRODUCT OVERVIEW................................................................................................................................7
KEY FEATURES............................................................................................................................................7
BASIC OPERATIONS..................................................................................................................................9
BECOMING FAMILIAR WITH THE VOICE PROMPTS...........................................................................................9
PLACING A PHONE CALL.............................................................................................................................10
Phone or Extension Numbers..............................................................................................................10
Direct IP Calls......................................................................................................................................11
CALL HOLD................................................................................................................................................11
CALL WAITING ...........................................................................................................................................11
CALL TRANSFER ........................................................................................................................................12
3-WAY CONFERENCING .............................................................................................................................12
CALL FEATURES ......................................................................................................................................13
SENDING AND RECEIVING FAX....................................................................................................................14
CONFIGURATION GUIDE .........................................................................................................................14
CONFIGURING THE HT–502 VIA VOICE PROMPTS.......................................................................................14
DHCP Mode.........................................................................................................................................14
STATIC IP Mode..................................................................................................................................14
Firmware Server IP Address................................................................................................................14
Configuration Server IP Address.........................................................................................................14
Upgrade Protocol.................................................................................................................................14
Firmware Upgrade Mode.....................................................................................................................14
WAN Port Web Access........................................................................................................................14
CONFIGURING THE HT–502 USING THE WEB BROWSER.............................................................................15
Access the Web Configuration Menu..................................................................................................15
END USER CONFIGURATION .......................................................................................................................16
IMPORTANT SETTINGS................................................................................................................................16
NAT Settings........................................................................................................................................16
DTMF Methods....................................................................................................................................17
Preferred VOCODER (Codec).............................................................................................................17
ADVANCED USER CONFIGURATION .............................................................................................................21
SAVING THE CONFIGURATION CHANGES .....................................................................................................27
REBOOTING THE HT–502 FROM REMOTE ...................................................................................................27
CONFIGURATION THROUGH A CENTRAL SERVER..........................................................................................28
GAPS –GRANDSTREAM AUTOMATED PROVISIONING SYSTEM.....................................................................28
SOFTWARE UPGRADE.............................................................................................................................29
FIRMWARE UPGRADE THROUGH TFTP/HTTP.............................................................................................29
CONFIGURATION FILE DOWNLOAD ..............................................................................................................30
FIRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX ........................................................................30
MANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD .....................................................................30
RESTORE FACTORY DEFAULT SETTING..............................................................................................31
RESET VIA THE RESET BUTTON..................................................................................................................31
RESET VIA IVR..........................................................................................................................................31
GLOSSARY OF TERMS ............................................................................................................................32

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TABLE OF FIGURES
HT–502 USER MANUAL
FIGURE 1: CONNECTING THE HT–502 .............................................................................................................5
FIGURE 2: CONFIGURING THE HT–502............................................................................................................6
FIGURE 3: SCREENSHOT OF CONFIGURATION LOG IN PAGE ............................................................................16
FIGURE 4: SCREENSHOT OF SAVE CONFIGURATION PAGE...............................................................................27
TABLE OF TABLES
HT–502 USER MANUAL
TABLE 1: DEFINITIONS OF THE HT–502 CONNECTORS .......................................................................................5
TABLE 2: DEFINITIONS OF THE HT–502 LEDS....................................................................................................6
TABLE3: HT–502 TECHNICAL SPECIFICATIONS ..................................................................................................8
TABLE 4: HT–502 HARDWARE SPECIFICATIONS.................................................................................................9
TABLE 5: HT–502 IVR MENU DEFINITIONS........................................................................................................9
TABLE 6: HT–502 CALL FEATURE DEFINITIONS ...............................................................................................13
TABLE 7: HT–502 BASIC CONFIGURATION SETTINGS DEFINITIONS ...................................................................18
TABLE 8: HT–502 DEVICE STATUS PAGE DEFINITIONS.....................................................................................21
TABLE 9: HT–502 ADVANCED CONFIGURATION PAGE DEFINITIONS ..................................................................21
TABLE 10: HT–502 INDIVIDUAL ACCOUNT SETTINGS DEFINITIONS....................................................................23
CONFIGURATION GUI INTERFACE EXAMPLES
HT–502 USER MANUAL
(http://www.grandstream.com/user_manuals/GUI/GUI_HT502.rar)
1. SCREENSHOT OF ADVANCED USER CONFIGURATION PAGE
2. SCREENSHOT OF BASIC SETTINGS CONFIGURATION PAGE
3. SCREENSHOT OF FXS PORT 1CONFIGURATION LOGIN PAGE
4. SCREENSHOT OF FXS PORT 2CONFIGURATION PAGE
5. SCREENSHOT OF STATUS CONFIGURATION LOG IN PAGE

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WELCOME
Thank you for purchasing Grandstream’s HT–502, the affordable, feature rich Analog Telephone Adaptor.
Grandstream HandyTone-502 is a new addition to the popular HandyTone ATA product family. It features
the rich audio quality, a broad range of voice codecs, and functionality of the HT–502, including two (2)
FXS ports each with independent SIP accounts.
This manual will help you learn how to operate and manage your HandyTone-502 Analog Telephone
Adaptor and make the best use of its many upgraded features including simple and quick installation, 3-
way conferencing, and direct IP-IP Calling. This HT–502 is very easy to manage and configure, and is
specifically designed to be an easy to use and affordable VoIP solution for both the residential user and the
tele-worker.
SAFETY COMPLIANCES
The HT–502 phone complies with FCC/CE and various safety standards. The HT–502 power adaptor is
compliant with UL standard. Only use the universal power adapter provided with the HT–502 package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power
adaptors.
WARRANTY
If you purchased your HT–502 from a reseller, please contact the company where you purchased your
phone for replacement, repair or refund. If you purchased the product directly from Grandstream, contact
your Grandstream Sales and Service Representative for a RMA (Return Materials Authorization) number
before you return the product. Grandstream reserves the right to remedy warranty policy without prior
notification.
Caution: Changes or modifications to this product not expressly approved by Grandstream, or operation
of this product in any way other than as detailed by this User Manual, could void your manufacturer
warranty. Please do not use a different power adaptor with the HT–502 as it may cause damage to the
products and void the manufacturer warranty.
•This document is contains links to Grandstream GUI Interfaces. Please download these examples
http://www.grandstream.com/user_manuals/GUI/GUI_HT502.rar for your reference.
•This document is subject to change without notice. The latest electronic version of this user manual is
available for download @: http://www.grandstream.com/user_manuals/HT502_User_Manual.pdf
•Reproduction or transmittal of the entire or any part, in any form or by any means, electronic or print,
for any purpose is not permitted without the express written permission of Grandstream Networks, Inc.

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CONFIGURE YOUR HT–502
Configuring your HT–502 and connecting the unit to the VoIP network is very simple. The HT–502 is easy to
configure using the embedded GUI pages and the following five (5) steps outlined below. Examples of the
GUI Interfaces can be downloaded from: http://www.grandstream.com/user_manuals/GUI/GUI_HT502.rar.
Before you begin, please verify the contents of the HT–502 package.
EQUIPMENT PACKAGING
Unpack and check all accessories. Equipment included in the package:
•one 12V universal power adapter
•one Ethernet cable
•one device unit
•one HT502 stand
CONNECT YOUR ATA
First, familiarize yourself with the features of the HT–502. The HT–502 has two FXS ports. Each FXS port
can have a separate SIP account. This is a key feature of HT–502. Both ports can make calls
concurrently.
FIGURE 1: CONNECTING THE HT–502
TABLE 1: DEFINITIONS OF THE HT–502 CONNECTORS
Power Cable Power adapter connection
WAN Port (RJ-45) Connect to the internal LAN network or router.
LAN Port (RJ-45) Connect the LAN port with an Ethernet cable to your PC.
RESET Factory Reset button. Press for 7 seconds to reset factory default settings.
PHONE1 (RJ-11) FXS port to be connected to analog phones / fax machines.
PHONE2 (RJ-11) FXS port to be connected to analog phones / fax machines.
There are five (5) LED buttons that help you manage the status of your HandyTone.
HT-502
B
ac
k Vi
e
w
RJ-45 Ports
10/100 Mbps Reset RJ-11 FXS Ports
(Phone)
Power
Supply
(12V)
HT-502
Fr
o
n
t
Vi
e
w
Display LEDs
(green)

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TABLE 2: DEFINITIONS OF THE HT–502 LEDS
Power LED Indicates Power. Remains ON when Power is connected and turned ON.
WAN LED Indicates LAN (or WAN) port activity.
LAN LED Indicates PC (or LAN) port activity.
PHONE1 /
PHONE2 LED Indicate status of the respective FXS Ports-PHONE1 / PHONE2 on the back
panel Busy – ON (Solid Green)
Available – OFF
Slow blinking FXS LEDs indicates voicemail for that port.
NOTE: All LEDs display green when ON. Slow blinking of Power, WAN and LAN LED together indicate
the product in firmware upgrading or provision state
CONFIGURE YOUR ATA
The HT–502 is easy to configure using the embedded GUI pages and the following five (5) steps.
FIVE EASY STEPS TO CONFIGURE THE HT–502
1. Connect a standard touch-tone analog telephone (or fax machine) to first FXS port.
2. Connect another standard touch-tone analog telephone (or fax machine) to second FXS port.
3. Insert the Ethernet cable into the WAN port of HT–502 and connect the other end of the Ethernet cable
to an uplink port (a router or a modem, etc.)
4. Connect a PC to the LAN port of HT–502.
5. Insert the power adapter into the HT–502 and connect it to a wall outlet.
FIGURE 2: CONFIGURING THE HT–502
z
Internet
ADSL/Cable
Modem Ethernet
WAN
LAN
FXS
Fax
Cordless
Phone
Analog Phone
FXS
Fax
Cordless
Phone
Analog Phone

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PRODUCT OVERVIEW
The HT–502 is a full feature voice and fax-over IP device that offers a high-level of integration including
dual 10M/100Mbps network ports with integrated router, NAT, DHCP server, dual port FXS telephone
gateway, market-leading sound quality, rich functionalities, and a compact and lightweight design. The HT–
502 fully compatible with SIP industry standard and can interoperate with many other SIP compliant
devices and software on the market. Moreover, it supports comprehensive voice codecs including G.711
(a/µ-law), G.723.1, G.726 (16/24/32/48 bit rates), G.729A/B/E and iLBC.
KEY FEATURES
Ethernet
Ports DHCP FXS Port PSTN Pass – through Voice Mail Indicator Voice Codec Remote Configuration
2 RJ-45 (LAN) Server/Client 2 No Yes iLBC, G.711, G.723,
G.726(16/24/32/48),
T.38, G.729A/B/E TFTP/HTTP

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TABLE3: HT–502 TECHNICAL SPECIFICATIONS
HT–502 Analog Telephone Adaptor
Telephone Interfaces 2 FXS ports, 2 SIP accounts
Network Interface Two (2) 10M/100 Mbps, RJ-45
LED Indicators Power, WAN, LAN, PHONE1 and PHONE2
Reset Button Factory Reset button.
Voice over Packet
Capabilities Voice Activity Detection (VAD) with CNG (comfort noise generation) and PLC
(packet loss concealment), Dynamic Jitter Buffer, Modem detection & auto-switch
to G.711, Packetized Voice Protocol Unit (supports RTP/RTCP and AAL2
protocol), G.168 compliant Echo Cancellation, LEC (line echo cancellation) with
NLP, Asymmetric RTP stream
Voice Compression G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder,
G.723.1A, G.726(ADPCM), G.729A/B/E, iLBC, G.726 provides proprietary VAD,
CNG, and signal power estimation, Voice Play Out unit (reordering, fixed and
adaptive jitter buffer, clock synchronization), AGC (automatic gain control), Status
output, Decoder controlling via voice packet header
DHCP Server/Client Yes, NAT Router or Switched Mode
Telnet Server Yes
Fax over IP T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for
Fax Pass-through (pending), Fax Datapump V.17, V.19, V.27ter, V.29 for T.38
fax relay
QoS Diffserve, TOS, 802.1 P/Q VLAN tagging
IP Transport RTP/RTCP
DTMF Method Flexible DTMF transmission method, user interface of In-audio, RFC2833, and/or
SIP Info
IP Signaling SIP (RFC 3261)
Provisioning TFTP, HTTP, HTTPS (pending)
Control TLS/SIPS , SIP over TCP/TLS
Management Syslog support, HTTPS and telnet (pending), remote management using Web
browser, Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (Tos,
DiffSery, MPLS), Auto/manual provisioning system
Dial Plan Yes
UPnP Yes
Power Output: 12VDC / Input: 100–240 VAC/50-60 Hz
Environmental Operational: 32o–104oF or 0o–40oC
Storage: 10o–130oF / Humidity: 10–90% Non-condensing
Dimensions
(H x W x D) 115mm (L) x 75mm (W) x 27mm (H)
Short and long haul REN3: Up to150 ft on 24 AWG line
Call Handling
Features Caller ID display or block, Call waiting caller ID, Call waiting/flash, Call transfer,
hold, forward, mute, 3-way conferencing, message waiting, Do-Not-Disturb
(DND), call-return service
Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
Polarity Reversal /
Wink Yes
EMC EN55022/EN55024 and FCC part15 Class B
Safety UL

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TABLE 4: HT–502 HARDWARE SPECIFICATIONS
LAN Interface 2 x RJ45 10/100Mbps (integrated router)
LED 5 LEDs (GREEN)
Universal
Switching
Power Adaptor
Input: 100-240V AC, 50/60Hz, 0.5A Max
Output: 12V DC, 1.25A
UL certified
Dimension 115mm (L) x 75mm (W) x 27mm (H)
Weight 94 g (0.21lbs)
Temperature 32~104°F / 0~40°C
Humidity 10% - 90% (non-condensing)
Compliance FCC, CE
BASIC OPERATIONS
BECOMING FAMILIAR WITH THE VOICE PROMPTS
HT–502 stores a voice prompt menu (Interactive Voice Response or IVR) for quick browsing and simple
configuration. The IVR menu and the LED button work with any of the FXS port. To enter the IVR menu,
pick up the handset and dial “***”.
TABLE 5: HT–502 IVR MENU DEFINITIONS
Menu Voice Prompt Options
Main Menu “Enter a Menu Option” Press “*” for the next menu option
Press “#” to return to the main menu
Enter 01-05, 07,10, 12-17,47 or 99 menu options
01 “DHCP Mode”,
“Static IP Mode” Press “9” to toggle the selection If using “Static IP Mode”, configure the IP address
information using menus 02 to 05.
If using “Dynamic IP Mode”, all IP address information
comes from the DHCP server automatically after reboot.
02 “IP Address “ + IP address The current WAN IP address is announced
If using “Static IP Mode”, enter 12 digit new IP address.
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 to the next selection in the list:
•PCM U
•PCM A
•iLBC
•G-726
•G-723

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•G-729
10 “MAC Address” Announces the Mac address of the unit.
12 WAN Port Web Access Press “9” to toggle between enable / disable
13 Firmware Server IP
Address Announces current Firmware Server IP address. Enter
12 digit new IP address.
14 Configuration Server IP
Address Announces current Config Server Path IP address. Enter
12 digit new IP address.
15 Upgrade Protocol Upgrade protocol for firmware and configuration update.
Press “9” to toggle between TFTP / HTTP
16 Firmware Version Firmware version information.
17 Firmware Upgrade Firmware upgrade mode. Press “9” to toggle among the
following three options:
- always check
- check when pre/suffix changes
- never upgrade
47 “Direct IP Calling” Enter the target IP address to make a direct IP call, after
dial tone. (See “Make a Direct IP Call”.)
99 “RESET” Press “9” to reboot the device
Enter MAC address to restore factory default setting
(See Restore Factory Default Setting section)
“Invalid Entry” Automatically returns to main menu
Five Success Tips when using the Voice Prompt
1. “*” shifts down to the next menu option
2. “#” returns to the main menu
3. “9” functions as the ENTER key in many cases to confirm an option
4. All entered digit sequences have known lengths - 2 digits for menu option and 12 digits for IP
address. For IP address, add 0 before the digits if the digits are less than 3 (i.e. - 192.168.0.26
should be key in like 192168000026. No decimal is needed).
5. Key entry can not be deleted but the phone may prompt error once it is detected
PLACING A PHONE CALL
PHONE OR EXTENSION NUMBERS
1. Dial the number directly and wait for 4 seconds (Default “No Key Entry Timeout”); or
2. Dial the number directly and press # (Use # as dial key” must be configured in web configuration).
Examples:
1. Dial an extension directly on the same proxy, (e.g. 1008), and then press the # or wait for 4 seconds.
2. Dial an outside number (e.g. [phone]), first enter the prefix number (usually 1+ or international
code) followed by the phone number. Press # or wait for 4 seconds. Check with your VoIP service
provider for further details on prefix numbers.

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DIRECT IP CALLS
Direct IP calling allows two parties, that is, a FXS Port with an analog phone and another VoIP Device, to
talk to each other in an ad hoc fashion without a SIP proxy.
Elements necessary to completing a Direct IP Call:
1. Both HT–502 and other VoIP Device, have public IP addresses, or
2. Both HT–502 and other VoIP Device are on the same LAN using private IP addresses, or
3. Both HT–502 and other VoIP Device can be connected through a router using public or private IP
addresses (with necessary port forwarding or DMZ).
HT-502 supports two ways to make Direct IP Calling:
Using IVR
1. Pick up the analog phone then access the voice menu prompt by dial “***”
2. Dial “47” to access the direct IP call menu
3. Enter the IP address after the dial tone and voice prompt “Direct IP Calling”
Using Star Code
1. Pick up the analog phone then dial “*47”
2. Enter the target IP address.
Note: NO dial tone will be played between step 1 and 2.
Destination ports can be specified using “*” (encoding for “:”) followed by the port number.
Examples:
a) If the target IP address is 192.168.0.160, the dialing convention is
*47 or Voice Prompt with option 47, then 192*168*0*160.
followed by pressing the “#” key if it is configured as a send key or wait 4 seconds. In this case, the
default destination port 5060 is used if no port is specified.
b) If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be:
*47 or Voice Prompt with option 47, then 192*168*0*160*5062 followed by pressing the “#” key
if it is configured as a send key or wait for 4 seconds.
NOTE: When completing direct IP call, the “Use Random Port” should set to “NO”. You cannot make
direct IP calls between FXS1 to FXS2 since they are using same IP.
CALL HOLD
Place a call on hold by pressing the “flash” button on the analog phone (if the phone has that button).
Press the “flash” button again to release the previously held Caller and resume conversation. If no “flash”
button is available, use “hook flash” (toggle on-off hook quickly). You may drop a call using hook flash.
CALL WAITING
Call waiting tone (3 short beeps) indicates an incoming call, if the call waiting feature is enabled. Toggle
between incoming call and current call by pressing the “flash” button. First call is placed on hold. Press
the “flash” button to toggle between two active calls.

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CALL TRANSFER
Blind Transfer
Assume that call Caller A and B are in conversation. A wants to Blind Transfer B to C:
3. Caller A presses FLASH on the analog phone to hear the dial tone.
4. Caller A dials *87 then dials caller C’s number, and then # (or wait for 4 seconds)
5. Caller A will hear the confirm tone. Then, A can hang up.
NOTE: “Enable Call Feature” must be set to “Yes” in web configuration page.
Caller A can place a call on hold and wait for one of three situations:
1. A quick confirmation tone (similar to call waiting tone) followed by a dial-tone. This indicates the
transfer is successful (transferee has received a 200 OK from transfer target). At this point, Caller
A can either hang up or make another call.
2. A quick busy tone followed by a restored call (on supported platforms only). This means the
transferee has received a 4xx response for the INVITE and we will try to recover the call. The busy
tone is just to indicate to the transferor that the transfer has failed.
3. Continuous busy tone. The phone has timed out. Note: continuous busy tone does not indicate
the transfer has been successful, nor does it indicate the transfer has failed. It often means there
was a failure to receive second NOTIFY – check firmware for most recent release.
Attended Transfer
Assume that Caller A and B are in conversation. Caller A wants to Attend Transfer B to C:
1. Caller A presses FLASH on the analog phone for dial tone.
2. Caller A then dials Caller C’s number followed by # (or wait for 4 seconds).
3. If Caller C answers the call, Caller A and Caller C are in conversation. Then A can hang up to
complete transfer.
4. If Caller C does not answer the call, Caller A can press “flash” to resume call with Caller B.
NOTE: When Attended Transfer fails and A hangs up, the HT-502 will ring back user A to remind A that B
is still on the call. A can pick up the phone to resume conversation with B.
3-WAY CONFERENCING
The HT-502 supports Bellcore style 3-way Conference.
Instructions for 3-way conference:
Assue that call party A and B are in conversation. Caller A(HT502) wants to bring third Caller C into
conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a dial tone.
2. A dials C’s number then # (or wait for 4 seconds).
3. If C answers the call, then A presses FLASH to bring B, C in the conference.
4. If C does not answer the call, A can press FLASH back to talk to B.
5. If A presses FLASH during conference, C will be dropped out

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Call Features
The HT–502 supports all the traditional and advanced telephony features.
TABLE 6: HT–502 CALL FEATURE DEFINITIONS
Key Call Features
*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 in the middle. Detail
see Direct IP Calling section on page 12.
*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 in the middle.
*82 Send Caller ID (per call). Dial “*82” + ” number ”. No dial tone is played in the middle.
*69 Call Return Service: Dial *69 and the phone will dial the last incoming phone number
received.
*70 Disable Call Waiting (per call). Dial “*70” + ” number ”. No dial tone is played in the
middle.
*71 Enable Call Waiting (per call). Dial “*71” + ” number ”. No dial tone is played in the
middle.
*72 Unconditional Call Forward: Dial “*72” and then the forwarding number followed by
“#”. Wait for dial tone and hang up. (dial tone indicates successful forward)
*73 Cancel Unconditional Call Forward. To cancel “Unconditional Call Forward”, dial
“*73”, wait for dial tone, then hang up.
*78 Enable Do Not Disturb (DND): When enabled all incoming calls are rejected.
*79 Disable Do Not Disturb (DND): When disabled, incoming calls are accepted.
*87 Blind Transfer
*90 Busy Call Forward: Dial “*90” and then the forwarding number followed by “#”. Wait
for dial tone then hang up.
*91 Cancel Busy Call Forward. To cancel “Busy Call Forward”, dial “*91”, wait for dial tone,
then hang up.
*92 Delayed Call Forward. Dial “*92” and then the forwarding number followed by “#”. Wait
for dial tone then hang up.
*93 Cancel Delayed Call Forward. To cancel Delayed Call Forward, dial “*93”, wait for dial
tone, then hang up.
Flash/Hook Toggles between active call and incoming call (call waiting tone). If not in conversation,
flash/hook will switch to a new channel for a new call.
# Pressing pound sign will serve as Re-Dial key.

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SENDING AND RECEIVING FAX
HT–502 supports fax in two modes: 1) T.38 (Fax over IP) and 2) 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 T.38 as fax mode (default). If the
service provider does not support T.38, pass-through mode may be used. If you have problems with
sending or receiving Fax, toggle the Fax Tone Detection Mode setting.
CONFIGURATION GUIDE
CONFIGURING THE HT–502 VIA VOICE PROMPTS
DHCP MODE
Select voice menu option 01 to enable HT–502 to use DHCP.
STATIC IP MODE
Select voice menu option 01 to enable HT–502 to use STATIC IP mode, then use option 02, 03, 04, 05 to
set up IP address, Subnet Mask, Gateway and DNS server respectively.
FIRMWARE SERVER IP ADDRESS
Select voice menu option 13 to configure the IP address of the firmware server.
CONFIGURATION SERVER IP ADDRESS
Select voice menu option 14 to configure the IP address of the configuration server.
UPGRADE PROTOCOL
Select voice menu option 15 to choose firmware and configuration upgrade protocol. User can choose
between TFTP and HTTP.
FIRMWARE UPGRADE MODE
Select voice menu option 17 to choose firmware upgrade mode among the following three options: 1)
always check, 2) check when pre/suffix changes, and 3) never upgrade
WAN PORT WEB ACCESS
Select voice menu option 12 to enable WAN Port Wed Access of the device configuration pages.

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CONFIGURING THE HT–502 USING THE WEB BROWSER
HT–502 has an embedded Web server that will respond to HTTP GET/POST requests. It also has
embedded HTML pages that allow users to configure the HT–502 through a web browser such as
Microsoft’s IE and AOL’s Netscape.
ACCESS THE WEB CONFIGURATION MENU
The HT–502 HTML configuration menu can be accessed via LAN or WAN port:
From the LAN port:
1. Directly connect a computer to the LAN port.
2. Open a command window on the computer
3. Type in “ipconfig /release”, the IP address etc. becomes 0.
4. Type in “ipconfig /renew”, the computer gets an IP address in 192.168.2.x segment by default
5. Open a web browser, type in the default gateway IP address. http://192.168.2.1. You will see the
login page of the device.
From the WAN port:
The WAN port HTML configuration option is disabled by default from factory. To access the HTML
configuration menu from the WAN port:
1. Enable the “WAN Port Web Access” option via IVR option 12.
2. Find the WAN IP address of the HT–502 using voice prompt menu option 02.
3. Access the HT–502 Web Configuration page by the following URI via WAN port: http://HandyTone-
IP-Address (the HT IP-Address is the WAN IP address for the HT–502).
NOTE: If using a web browser to enter the configuration page, strip the leading “0”s because the browser
will parse in octet. (i.e. if the IP address is: 192.168.001.014, please type in: 192.168.1.14).

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END USER CONFIGURATION
Once the HTTP request is sent from a web browser, the user will see a log in screen. There are two
default passwords for the login page:
User Level: Password: Web pages allowed:
End User Level 123 Only Status and Basic Settings
Administrator Level admin Browse all pages
Only an administrator can access the “ADVANCED SETTINGS” configuration page.
FIGURE 3: SCREENSHOT OF CONFIGURATION LOG IN PAGE
NOTE: If you cannot log into the configuration page by using default password, please check with the VoIP
service provider. The service provider may have provisioned and configured the device for you. The Basic
Configuration Page is the first web GUI the user will see.
Important Settings
The end-user must configure the following settings according to the local environment. NOTE: Most
settings on the web configuration pages are set to the default values.
NAT SETTINGS
If you plan to keep the gateway within a private network behind a firewall, we recommend using STUN
Server. The following three (3) settings are useful in the STUN Server scenario:
1. STUN Server (under Advanced Settings webpage)
Enter a STUN Server IP (or FQDN) that you may have, or look up a free public STUN Server on the
internet and enter it on this field. If using Public IP, keep this field blank.
2. Use Random Ports (under Advanced Settings webpage)
This setting depends on your network settings. Generally if you have multiple IP devices under the
same network, it should be set to Yes. If using a Public IP address, set this parameter to No.
3. NAT Traversal (under the Profile web pages)
Set this to Yes when gateway is behind firewall on a private network.

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DTMF METHODS
DTMF Settings are in Profile pages.
•DTMF in-audio
•DTMF via RTP (RFC2833)
•DTMF via SIP INFO
Enable one or more DTMF methods based on your PBX system.
PREFERRED VOCODER (CODEC)
The HT-502 supports a broad range of voice codecs. Under Profile web pages, choose your preferred
order of different codecs:
•PCMU/A (or G711µ/a)
•G729 A/B/E
•G723
•G726 (16/24/32/40)
•iLBC

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TABLE 7: HT–502 BASIC CONFIGURATION SETTINGS DEFINITIONS

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End User Password Password to access the Web Configuration Menu. This field is case sensitive
with a maximum length of 25 characters.
Web Port By default, HTTP uses port 80. This field is for customizable web port.
Telnet Server Default is set to YES.
IP Address There are two modes to operate the HT–502:
DHCP mode: all the field values for the Static IP mode are not used (even
though they are still saved in the Flash memory.) The HT–502 acquires its IP
address from the first DHCP server it discovers from the LAN it is connected.
Using the PPPoE feature: set the PPPoE account settings. The HT–502 will
establish a PPPoE session if any of the PPPoE fields is set.
Static IP mode: configure the IP address, Subnet Mask, Default Router IP
address, DNS Server 1 (primary), DNS Server 2 (secondary) fields. These fields
are set to zero by default.
DHCP hostname This option specifies the name of the client. This field is optional but may be
required by some Internet Service Providers. Default is blank.
DHCP domain This option specifies the domain name that client should use when resolving
hostnames via the Domain Name System. Default is blank.
DHCP vendor class
ID Used by clients and servers to exchange vendor-specific information. Default is
HT500.
PPPoE account ID PPPoE username. Necessary if ISP requires you to use a PPPoE (Point to
Point Protocol over Ethernet) connection.
PPPoE password PPPoE account password.
PPPoE Service
Name This field is optional. If your ISP uses a service name for the PPPoE connection,
enter the service name here. Default is blank.
Time Zone Controls how the date/time is displayed according to the specified time zone.

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Self Defined Time
Zone The syntax is std offset dst [offset],start[/time],end[/time]
Default is set to : MTZ+6MDT+5,M3.2.0,M11.1.0
MTZ+6MDT+5,
It indicates a time zone with 6 hours offset with 1 hour ahead which is the US
central time.
It is positive (+) if the local time zone is west of the Prime Meridian and negative
(-) if it is east.
Prime Meridian (a.k.a: International or Greenwich Meridian)
M3.2.0,M11.1.0
The 1st number indicates Month: 1,2,3,..,12 (for Jan, Feb, .., Dec)
The 2nd number indicates the nth iteration of the weekday: (1st Sunday, 3rd
Tuesday etc)
The 3rd number indicates Weekday: 0,1, 2, ..,6(for Sun, Mon, Tue, .., Sat)
Therefore, this example is the DST which starts from the second Sunday of
March to the 1st Sunday of November.
Language Languages supported with voice prompt
Device Mode This parameter controls whether the device is working in NAT router mode or
Bridge mode. Save the setting and reboot prior to configuring HT–502.
Enable UPnP
support If set to “Yes”, the HT-502 would act as an UPnP gateway for your UPnP enable
applications.
UPnP - Universal Plug n Play
Repl
y
to ICMP on
WAN port If set to “Yes”, the HT–502 will respond to the PING command from other
computers, but it also is vulnerable to the DOS attack. Default is No.
WAN side
HTTP/Telnet
Access
If set to “Yes”, user can access the configuration page through the WAN port,
instead of through the “PC” port. Warning: this configuration is less secure than
default option. Default is No.
Cloned WAN MAC
Addr This allows you to change/set the MAC address on the WAN interface.
LAN Subnet Mask Sets the LAN subnet mask. Default value is 255.255.255.0
LAN DHCP Base IP Base IP for the LAN port which functions as a Gateway for the subnet.
Default value is 192.168.2.1.
DHCP IP Lease
Time Value is set in units of hours. Default value is 120 hrs (5 Days.) The time IP
address is assigned to the LAN clients.
DMZ IP Forward all WAN IP traffic to a specific IP address if no matching port is used by
HT–502 or defined in port forwarding.
Port Forwarding Forwards a matching (TCP/UDP) port to a specific LAN IP address with a
specific (TCP/UDP) port.
In addition to the Basic Settings configuration page, end users also have access to the Device Status page.