Grandstream Networks HT-488 User manual

Grandstream Networks, Inc.
HT488
FXS/FXO Port IAD
HT488 User Manual www.grandstream.com
Firmware Version 1.0.3.86 [e-mail]

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TABLE OF CONTENTS
HT488 USER MANUAL
WELCOME.......................................................................................................................................................4
SAFETY COMPLIANCES................................................................................................................................4
WARRANTY.................................................................................................................................................4
INSTALLATION.................................................................................................................................................5
EQUIPMENT PACKAGING..............................................................................................................................5
CONNECTING YOUR ATA.............................................................................................................................5
FIVE EASY STEPS TO INSTALL THE HT488.....................................................................................................6
PRODUCT OVERVIEW .......................................................................................................................................7
KEY FEATURES &SPECIFICATIONS ..............................................................................................................7
BASIC OPERATIONS ........................................................................................................................................9
GET FAMILIAR WITH VOICE PROMPT.............................................................................................................9
MAKE PHONE CALLS .................................................................................................................................10
CALLING PHONE OR EXTENSION NUMBERS.................................................................................................10
DIRECT IP CALLS......................................................................................................................................10
CALL HOLD...............................................................................................................................................11
CALL WAITING ..........................................................................................................................................11
CALL TRANSFER........................................................................................................................................11
3-WAY CONFERENCING .............................................................................................................................12
PSTN PASS THROUGH .............................................................................................................................12
VOIP-TO-PSTN CALLS ............................................................................................................................12
PSTN-TO-VOIP CALLS .............................................................................................................................14
ROUTE CALLS TO PSTN............................................................................................................................14
FORWARD CALLS TO PSTN .......................................................................................................................14
FORWARD CALLS TO VOIP.........................................................................................................................15
ONE STAGE DIALING .................................................................................................................................15
FAX SUPPORT...........................................................................................................................................15
CALL FEATURES ...........................................................................................................................................16
LED LIGHT PATTERN INDICATION ..........................................................................................................16
CONFIGURATION GUIDE.................................................................................................................................17
CONFIGURING HT488 THROUGH VOICE PROMPT........................................................................................17
DHCP MODE............................................................................................................................................17
STATIC IP MODE.......................................................................................................................................17
TFTP SERVER ADDRESS...........................................................................................................................17
FIRMWARE SERVER IP ADDRESS...............................................................................................................17
CONFIGURATION SERVER IP ADDRESS ......................................................................................................17
UPGRADE PROTOCOL................................................................................................................................17
FIRMWARE UPGRADE MODE......................................................................................................................17
CONFIGURING HT488 WITH WEB BROWSER...............................................................................................18
ACCESS THE WEB CONFIGURATION MENU .............................................................................................18
END USER CONFIGURATION ......................................................................................................................18
ADVANCED CONFIGURATION AND FXS/FXO PORTS PARAMETERS...............................................................21
SAVING THE CONFIGURATION CHANGES.....................................................................................................27
REBOOTING THE HT488 FROM REMOTE ................................................................................................27
CONFIGURATION THROUGH A CENTRAL SERVER.........................................................................................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

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TABLE OF FIGURES
HT488 USER MANUAL
FIGURE 1: CONNECTING THE HT488 ...............................................................................................................5
FIGURE 2: INTERCONNECTION DIAGRAM OF THE HT488 ...................................................................................6
FIGURE 3: SCREENSHOT OF CONFIGURATION LOG-IN PAGE............................................................................19
FIGURE 4: SCREENSHOT OF CONFIGURATION UPDATE MODE .........................................................................27
FIGURE 5: SCREENSHOT OF REBOOTING SCREEN...........................................................................................27
TABLE OF TABLES
HT488 USER MANUAL
TABLE 1: DEFINITIONS OF THE HT488 CONNECTORS .......................................................................................5
TABLE 2: HT488 TECHNICAL SPECIFICATIONS .................................................................................................7
TABLE 3: HT488 HARDWARE SPECIFICATION...................................................................................................8
TABLE 4: HT488 IVR MENU DEFINITIONS........................................................................................................9
TABLE 5: HT488 CALL FEATURE DEFINITIONS ...............................................................................................16
TABLE 6: HT488 LED DEFINITIONS...............................................................................................................16
TABLE 7: HT488 DEVICE STATUS PAGE DEFINITIONS.....................................................................................19
TABLE 8: HT488 BASIC SETTINGS PAGE DEFINITIONS....................................................................................20
TABLE 9: HT488 ADVANCED SETTINGS PAGE DEFINITIONS ............................................................................22
TABLE 10: HT488 FXS PORT SETTINGS PAGES DEFINITIONS.......................................................................23
TABLE 11: HT488 FXO PORT SETTINGS PAGES DEFINITIONS.......................................................................26
TABLE 12: HT488 CALL PROGRESS TONES SETTINGS PAGE DEFINITIONS ......................................................26
TABLE OF GUI INTERFACES
HT488 USER MANUAL
(GUI Interfaces – http://www.grandstream.com/User_Manuals/GUI/GUI_HT488.rar )
1. SCREENSHOT OF CONFIGURATION LOGIN PAGE
2. STATUS CONFIGURATION PAGE DEFINITIONS
3. SCREENSHOT OF BASIC SETTINGS CONFIGURATION PAGE
4. SCREENSHOT OF ADVANCED SETTINGS CONFIGURATION PAGE
5. SCREENSHOT OF FXS ACCOUNT CONFIGURATION
6. SCREENSHOT OF FXO ACCOUNT CONFIGURATION
7. SCREENSHOT OF CALL PROGRESS TONES CONFIGURATION PAGE
8. SCREENSHOT OF SAVED CONFIGURATION CHANGES
9. SCREENSHOT OF REBOOT PAGE

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WELCOME
Thank you for purchasing Grandstream’s HT488, the affordable, feature rich, Analog Telephone
Adaptor/IAD. The HT488 is based on SIP standard and features both an FXS and FXO port for Internet
data, voice, and PSTN networks. It functions as an “all-in-one” IAD. The HT488 features a high level of
integration including, but not limited to an integrated router, an analog telephone FXS interface and a
programmable FXO gateway for toggling operations between the IP network (SIP Server platform) and
the PSTN network. The HT488 supports the feature of “hop-on/hop-off” calling.
This manual will help you learn how to operate and manage your HT488 Analog Telephone Adaptor/IAD
and make the best use of its many features including simple and quick installation, 3-way conferencing,
and remote call origination and “hop-on/hop-off” calling using the programmable PSTN FXO port. The
HT488 is easy to manage and configure, and is an affordable VoIP solution for both the residential user
and the remote user.
This document is subject to changes without notice. The latest electronic version of this user manual can
be downloaded from the following location: http://www.grandstream.com/resources.html
SAFETY COMPLIANCES
The HT488 adaptor complies with FCC/CE and various safety standards. The HT488 power adaptor is
compliant with UL standard. Only use the universal power adapter provided with the HT488 package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power
adaptors.
WARRANTY
If you purchased your HT488 from a reseller, please contact them 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.
•This document is contains links to Grandstream GUI Interfaces. Please remember to download these
examples http://www.grandstream.com/user_manuals/GUI/GUI_HT488.rar for your reference.
•This document is subject to change without notice. The latest electronic version of this user manual is
available for download from the following location:
http://www.grandstream.com/user_manuals/HT4488_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 without the express written permission of Grandstream Networks, Inc. is not
permitted.

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INSTALLATION
EQUIPMENT PACKAGING
The HT488 ATA package contains:
•One HT488 Main Case
•One Universal Power Adaptor
•One Ethernet Cable
CONNECTING YOUR ATA
HT488 Analog Telephone Adaptor is an all-in-one VoIP integrated device designed to be a total solution
for networks providing VoIP services. All of the HT488 VoIP features and functions are available via a
regular analog telephone.
FIGURE 1: CONNECTING THE HT488
BUTTON
RED LED
GREEN LED
TABLE 1: DEFINITIONS OF THE HT488 CONNECTORS
+5V/1.2A Power adapter connection
LAN Port (RJ-45) Connect the LAN port with an Ethernet cable to your PC.
WAN Port (RJ-45) Connect to the internal LAN network or router.
PHONE (RJ-11) FXS port to be connected to analog phones / fax machines.
LINE (RJ-11) FXO port should be connected to the PSTN line
BUTTON Button and two colors led indicator.
RJ45
10M Ethernet
LAN - WAN
RJ11
FXS Port
(Phone)
+5V/1200mA
RJ11
FXO Port
(
Phone Line
)

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FIVE EASY STEPS TO INSTALL THE HT488
The HT488 is designed for easy configuration and easy installation. Detailed configuration instructions
are located in the CONFIGURATION section.
1. Connect a standard touch-tone analog telephone to the PHONE port.
2. Insert a standard RJ11 telephone cable into the LINE port and connect the other end of the
telephone cable to a wall jack.
3. Insert the Ethernet cable into the WAN port of HT488 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 HT488 if HT488 is used as a router.
5. Insert the power adapter into the HT488 and connect it to a wall outlet.
FIGURE 2: INTERCONNECTION DIAGRAM OF THE HT488
HandyTone488 has one FXS port and one FXO port. The PHONE port next to the LAN port is an FXS
port. The LINE port on the side of the HandyTone488 is a FXO port. Both the FXS port and the FXO port
can have a separate SIP account. This is a key feature of HandyTone488 as it supports simultaneous
call on both FXS port and FXO port. Telephone calls can be originated from or terminated on the PSTN
network via FXO port remotely.
Internet ADSL/Cable Modem
Ethernet
Fa
x
Cordless Phone
Analog Phone
WAN
LAN
FXS
FXO
PSTN
Cloud

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PRODUCT OVERVIEW
The HT488 enables IP connectivity for any phone or fax using the FXS port and a web-based GUI for
easy configuration and installation. The device supports telephony features including caller ID, call
waiting, call transfer, 3-way conferencing, and multi-language voice prompts. It functions as an FXO
gateway that enables remote call origination and termination from/to PSTN and supports the feature of
“hop-on/hop-off” using the programmable FXO port.
KEY FEATURES &SPECIFICATIONS
Ethernet
Ports DHCP FXS Port PSTN Pass – through Voice Mail Indicator Voice Codec Remote Configuration
2 RJ45
(LAN/WAN) Server/Client 1 Yes Yes iLBC, G.723, G.711, G.729, G.726, T.38 TFTP/HTTP
The HT488 supports independent SIP accounts or SIP server platform for each port. From a technical
standpoint, the HT488 offers a power-outage survivable life line and fail-over-to-PSTN support, dual 10
Mbps Ethernet ports with an integrated NAT router, and supports a broad range of popular voice codecs.
Table 2 and Table 3 summarize the HT488 technical and hardware specifications.

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TABLE 2: HT488 TECHNICAL SPECIFICATIONS
Lines/SIP Accounts 2 lines / 2 SIP accounts
Protocol Support SIP 2.0 (RFC 3261), TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP,
NTP, TFTP, PPPoE protocols
Feature Keys 1 button
LAN/WAN Interface RJ-45 10 Mbps
Device Management Web interface or via secure (AES encrypted) central configuration file for mass
deployment
Support device configuration via built-in IVR, Web browser or central configuration file
through TFTP or HTTP
Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
Auto/manual provisioning system
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices including
behind firewall/NAT
Syslog support
DHCP Server/Client Yes
Audio Features Advanced Digital Signal Processing (DSP)
Dynamic negotiation of codec and voice payload length
Support for G.723,1 (5.3K/6.3K), G.729A, G.711 µ/A, G.726, and iLBC codecs
In-band and out-of-band DTMF ((in audio, RFC2833, SIP INFO)
Silence Suppression, VAD (voice activity detection), CNG (comfort noise generation),
ANG (automatic gain control)
Adaptive jitter buffer control , Packet delay & loss concealment
Support volume amplification, Support configurable Call Progress Tones
Call Handling Features Caller ID display or block, Call waiting caller ID, Call waiting/flash, Call transfer, hold,
forward, mute, 3-way conferencing
Network and
Provisioning Manual or dynamic host configuration protocol (DHCP) network setup; RTP and NAT
support traversal via STUN
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
Security DIGEST authentication and encryption using MD5 and MD5-sess
TABLE 3: HT488 HARDWARE SPECIFICATION
LAN interface 1xRJ45 10Mbps
WAN interface 1xRJ45 10Mbps
FXS port 1 x FXS
FXO port (PSTN Port) 1x PSTN pass-through and life line port
Button 1
LED Dual color (green/red)
Universal Switching
Power Adaptor Input: 100-240VAC 50-60 Hz / Output: +5VDC, 1200mA
UL certified
Dimension 70mm (W) x 130mm (D) x 27mm (H)
Weight 0.6lbs (0.3kg)
Temperature 40 - 130°F / 5 – 45°C
Humidity 10% - 90% (non-condensing)
Compliance

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BASIC OPERATIONS
GET FAMILIAR WITH VOICE PROMPT
HT488 has a stored voice prompt menu for quick browsing and simple configuration. The voice prompt
menu and the LED button is designed for the FXS port ONLY. Press the button or “***” from the analog
phone to enter the IVR menu.
TABLE 4: HT488 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, 07,12-17,47 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
•G.723
•G.729
•G.726
•iLBC
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 a 12 digit 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; or
Enter encoded MAC address to restore factory default setting
(See “Restoring Factory Settings”)
“Invalid Entry” Automatically returns to main menu

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NOTE:
•“*” shifts down to the next menu option
•“#” returns to the main menu
•“9” functions as the ENTER key in many cases to confirm an option
•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 (like 192.168.0.26
should be key in like 192168000026, no dot needed while input). Once all of the digits are
collected, the input will be processed.
•Key entry can not be deleted but the phone may prompt error once it is detected
MAKE PHONE CALLS
CALLING PHONE OR EXTENSION NUMBERS
There are currently two methods to make an extension number call:
a) Dial the numbers directly and wait for 4 (default) seconds.
b) Dial the numbers directly, and press # (assuming that “use # as dial key is selected in web
configuration).
Examples:
•To dial another extension on the same proxy, such as 1008, simply pick up the attached phone,
dial 1008 and then press the # or wait for 4 seconds.
•To dial a PSTN number such as 6266667890, you might need to enter in some prefix number
followed by the phone number. Please check with your VoIP service provider to get the
information. If you phone is assigned with a PSTN-like number such as 6265556789, most likely
you just follow the rule to dial 16266667890 as if you were calling from a regular analog phone of
North America, then followed by pressing # or wait for 4 seconds.
DIRECT IP CALLS
Direct IP calling allows two parties, that is, a HT with an analog phone and another VoIP Device, to talk to
each other in an ad hoc fashion without a SIP proxy. This kind of VoIP calls can be made between two
parties if:
•Both HT488 and other VoIP Device(i.e., another HT ATA or Budgetone SIP phone or other VoIP
unit) have public IP addresses, or
•Both HT488 and other VoIP Device are on the same LAN using private IP addresses, or
•Both HT488 and other VoIP Device can be connected through a router using public or private IP
addresses (with necessary port forwarding or DMZ).
To make a direct IP call, first pick up the analog phone or turn on the speakerphone on the analog phone,
then access the voice menu prompt by dial “***” or press the button on the HT488, and dials “47” to
access the direct IP call menu. User will hear a voice prompt “Direct IP Calling” and a dial tone. Enter a
12-digit target IP address to make a call. Destination ports can be specified by using “*4” (encoding for
“:”) followed by the port number.
Examples:
•If the target IP address is 192.168.0.10, the dialing convention is Voice Prompt with option 47,
then 192 168 000 010 followed by pressing the “#” key if it is configured as a send key or wait for
more than 5 seconds.
•If the target IP address/port is 192.168.1.20:5062, then the dialing convention is: Voice Prompt
with option 47, then 192168001020*45062 followed by pressing the “#” key if it is configured as
a send key or wait for 4 seconds.
NOTE: When making a direct IP call, the “Use Random Port” should set to “NO”.

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CALL HOLD
This function is applicable on FXS port for VoIP calls only. While in conversation, pressing the “flash”
button on the attached analogue phone (if the phone has that button) will put the remote end on hold.
Pressing the “flash” button again will release the previously held party and the bi-directional media will
resume. If no “flash” button, then on-off hook quickly (hook flash) will do the same thing but also risk of
losing call if the time is not short enough.
CALL WAITING
This function is applicable on FXS port for VoIP calls only. If call waiting feature is enabled, while the user
is in a conversation, he will hear a special stutter tone if there is another incoming call. User can press the
flash button to put the current call party on hold and switch to the other call. Pressing flash button toggles
between two active calls. The HT488 also provides CWCID (call waiting caller ID) information which
includes caller ID information in addition to the special stutter tone. The analog phone must support this
feature for it to work on the HT488. Both call waiting functions (call waiting and CWCID) are activated
and deactivated from the configuration pages menu.
CALL TRANSFER
Blind Transfer
This function is applicable on FXS port for VoIP calls only. Assume that call party A and B are in
conversation. A wants to Blind Transfer B to C:
1. A press FLASH on the analog phone to hear the dial tone.
2. Then A dials *87 then dials C’s number, and then #
3. A can hang up.
NOTE: “Enable Call Feature” has to be set to “Yes” in web configuration page.
Three situations can follow the transfer:
1. A quick confirmation tone (temporarily using the call waiting indication tone) followed by a
dial tone. This indicates the transfer is successful (transferee has received a 200 OK from
transfer target). At this point, 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. Busy tone keeps playing. This means we have failed to receive the second NOTIFY from the
transferee and decided to time out. Note: this does not indicate the transfer has been
successful, nor does it indicate the transfer has failed. When transferee is a client that does not
support the second NOTIFY (such as our own earlier firmware), this will be the case. In bad
network scenarios, this could also happen, although the transfer may have been completed
successfully.
Attended Transfer
This function is applicable on FXS port for VoIP calls only. Assume that call party A and B are in
conversation. A wants to Attend Transfer B to C:
1. A presses FLASH on the analog phone to get a dial tone
2. A then dial C’s number followed by #.
3. If C answers the call, A and C are in conversation. Then A can hang up to complete transfer.
4. If C does not answer the call, A can press “flash” back to talk to B.

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NOTE: When Attended Transfer fails and A hangs up, the HT503 will ring user A back again to remind
A that party B is still on the call. Party A can pick up the phone to resume a conversation with party B.
3-WAY CONFERENCING
Star Code Style 3-way Conference
This function is applicable on FXS port for VoIP calls only. Assuming that call party A and B are in
conversation. A wants to bring C in a conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a dial tone.
2. A dials *23 then 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.
NOTE: “Enable Call Feature” has to be set to YES in FXS PORT in the web configuration page.
Bellcore Style 3-way Conference
Bellcore style 3-way conference is also supported. To do this, user needs to enable “Use Bell-style 3-way
Conference” in FXS PORT web configuration.
Assuming that call party A and B are in conversation. A (HT488) wants to bring C in a 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.
NOTE: A is the call initiator for both calls with B and C.
PSTN PASS THROUGH
HT488 supports PSTN pass through on FXS port 1. User can make and receive PSTN calls with attached
analog phone in FXS PORT.
•To receive PSTN calls, simply make phone off hook when the analog phone rings.
•To make a PSTN call, simply press the PSTN access code (*00 is default, or any number
configured in web configuration page) to switch to the PSTN line and get dial tone, then dial the
number.
When the HT488 is out of power, it will function as a jack. The user will be automatically connected to the
PSTN Line.
VOIP-TO-PSTN CALLS
This function is applicable on FXO port that functions as a bridge between VoIP and PSTN. The user can
remotely use PSTN line to initiate a call.

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To make a VoIP-to-PSTN call:
1. Dial the FXO SIP account phone number to establish the VoIP session. The caller will hear the
ring back tone once. Then the caller hears either a special continuous tone or a dial tone. The
special continuous tone is played if the pin code is configured, or the dial tone otherwise.
2. Enter in the pin code that is configurable on the configuration page. The caller will hear the dial
tone and get connected to the PSTN line if the pin code is valid, otherwise the continuous tone is
played again to prompt caller to enter in the pin code again. The use may try up to 3 times to
enter in pin code, if none is valid, HT488 will hang up.
3. After the caller hears dial tone from PSTN line, the caller can start dialing number to make calls.
4. The user can hit the # key to identify the end of the pin code or wait 4 seconds for a new dial tone
and then dialing the PSTN number.
NOTE:
•Users can choose whether apply password protection for VoIP-to-PSTN calls or not. A PIN (Pin
for PSTN calls) consists of up to 8 numeric digits can be configured through BASIC SETTINGS of
the web configuration page. By default, there is no password protection, i.e. there is no
authentication required for callers on the use of PSTN line through HT488.
•When a PIN is configured for VOIP-to-PSTN call flow, the VoIP device that calls into the HT488
FXO account needs to configure RFC2833 or SIP Info for DTMF digit transmission.
•Upon hearing the special continuous tone for PIN code input, if the caller don’t enter any digit,
HT488 will time out and hang up the call in 10 seconds. During any stage of DTMF digits input, a
4 seconds timeout is applied to serve as an end of PIN or destination number input. Users may
also use the “#” key to indicate the end of an input.
•On the web configuration page, if the “Forward to PSTN” is configured, the second stage dialing
is eliminated, i.e., after dialing into the FXO SIP account number, the PSTN number will be called
automatically.

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PSTN-TO-VOIP CALLS
This function is applicable on FXO port that functions as a bridge between VoIP and PSTN. The user can
make VoIP calls remotely by dialing into FXO Line port on HT488.
To make a PSTN-to-VoIP call:
1. Make an incoming call to the PSTN line on FXO port. The attached analog phone will ring for 4
times by default, this setting is configurable on the configuration page.
2. If no one picks up the phone on FXS port after 4 rings (default configuration), then the caller
hears either a special continuous tone or a dial tone. The continuous tone is played if the pin
code is configured, or the dial tone otherwise.
3. Enter in the pin code that is configurable on the configuration page. The caller will hear the dial
tone and get bridged to VoIP if the pin code is valid, otherwise the continuous tone is played
again to prompt caller to enter in the pin code again. The use may try up to 3 times to enter in pin
code, if none is valid, HT488 will hang up.
4. The caller can dial a VoIP number followed by # (or wait for 4 seconds), the VoIP call will be
initiated from the SIP account configured on the FXO port.
NOTE:
•Users can choose whether apply password protection for PSTN-to-VoIP calls or not. A PIN (Pin
to VoIP calls) consists of up to 8 numeric digits can be configured through BASIC SETTINGS of
the web configuration page. By default, there is no password protection, i.e. there is no
authentication required for callers on the use of VoIP SIP account on FXO port.
•Upon hearing the special continuous tone for PIN code input, if the caller don’t enter any digit,
HT488 will time out and hang up the call in 10 seconds. During any stage of DTMF digits input, a
4 seconds timeout is applied to serve as an end of PIN or destination number input. Users may
also use the “#” key to indicate the end of an input.
•On the web configuration page, if the “Forward to VoIP” is configured, the second stage dialing is
eliminated, i.e., after bridging to VoIP, the configured VoIP number will be called automatically.
ROUTE CALLS TO PSTN
The FXO port enables access to the PSTN network. By default, the HT503 is in VoIP mode at off-hook.
If “Route call to PSTN” is configured, certain calls will be initiated from the FXO PSTN line port. This call
feature is especially useful for emergency calls or local telephone calls.
To use this feature, users need to specify a prefix or a telephone number in the “Route call to PSTN” in
the BASIC SETTINGS web configuration page. If the dialed digits match the specified prefix, outbound
calls will be initiated from PSTN line.
Note: The route to PSTN feature is only applicable to a phone connected to the FXS Port. The
configuration is done using the “dial plan” feature under the FXS tab. An example of the configuration is
{L: 911x+} This shows that only calls that start with 911 are immediately forwarded to the PSTN line. All
other numbers will not be routed to the PSTN. An normal # would be: {L: 617x+|x+} or {x+| L: 617x+}
For example, if “Route call to PSTN” is configured as 626, all outgoing calls starting with 626 will be
initiated from the PSTN line.
FORWARD CALLS TO PSTN
Any VOIP call may be forwarded to a specified PSTN number if the call is not answered after a pre
configured numbers of rings. By default “Number of Rings” parameter has value 4.

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For example, if the end-user has configured a cell phone number in the field “Forward to PSTN” under
BASIC SETTINGS configuration page, all calls will be forwarded to the cell phone number after 4 rings.
FORWARD CALLS TO VOIP
By default, each incoming PSTN call is received over the FXS port. The end-user may forward such a
call to any preconfigured VoIP extension, in case the call is not answered in a certain number of rings.
The Default value of the parameter “Number of Rings” is 4. If during 4 rings, the incoming from the PSTN
call is not answered, the call will be forwarded to another VoIP number previously configured in the
field:”Forward to VoIP”. This parameter can also be found under BASIC SETTINGS configuration page.
ONE STAGE DIALING
This feature is applicable for VoIP to PSTN calls. Any VoIP extension may dial directly to a local PSTN
number if the one-stage dialing feature is activated. This feature is configured under the FXO
Configuration page and requires SIP Server configuration and support. The special dial plan feature must
be activated in the SIP Server. An outbound call will be sent directly to the assigned FXO port account,
where there the HT488 will initiate a call to the local CO. The RequestURI header in the INVITE
message contains the phone number used to initiate the call to the local CO.
FAX SUPPORT
HT488 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 (default). 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 must select all the Preferred Codecs to be PCMU/PCMA (G.711-u/a).

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CALL FEATURES
TABLE 5: HT488 CALL FEATURE DEFINITIONS
Key Call Features
*23 3-Way Conferencing. Refer to above section for procedure to perform 3-Way Calling.
*30 Block Caller ID (for all subsequent calls)
*31 Send Caller ID (for all subsequent calls)
*67 Block Caller ID (per call). Dial “*67” + ” number ”. No dial tone will be played in the middle.
*82 Send Caller ID (per call). Dial “*82” + ” number ”. No dial tone will be played in the middle.
*50 Disable Call Waiting (for all-config change)
*51 Enable Call Waiting (for all-config change)
*70 Disable Call Waiting (Per Call)
*71 Enable Call Waiting (Per Call)
*72 Unconditional Call Forward.
To use this feature, dial “*72”, wait for the dial tone. Then dial the forward number ended with #,
wait for dial tone, hang up.
*73 Cancel Unconditional Call Forward
To cancel “Unconditional Call Forward”, dial “*73” and get the dial tone, then hang up.
*87 Blind Transfer
Refer to section above for procedure to perform Blind Transfer.
*90 Busy Call Forward
To use this feature, dial “*90”, wait for the dial tone. Then dial the forward number ended with #,
wait for dial tone, hang up.
*91 Cancel Busy Call Forward
To cancel “Busy Call Forward”, dial “*91” and get the dial tone, then hang up
*92 Delayed Call Forward
To use this feature, dial “*92”, wait for the dial tone. Then dial the forward number ended with #,
wait for dial tone, hang up.
*93 Cancel Delayed Call Forward
To cancel this Forward, dial “*93” and get the dial tone, then hang up
Flash/Hook When in conversation, this action will switch to the new incoming call if there is a call waiting beep.
When in conversation and there is no call waiting, this action will switch to a new channel for a
new call.
LED Light Pattern Indication
TABLE 6: HT488 LED DEFINITIONS
RED LED always indicates not normal status
DHCP Failed or WAN No Cable Button flashes every 2 seconds (if DHCP is configured)
HT488 fails to register Button flashes every 2 seconds (if SIP server is configured)
Firmware Upgrading Button flashes every 2 seconds
Device Malfunctions Red light steady on
GREEN LED indicates normal working status
Message Waiting Indication Button flashes every 2 seconds
RINGING Button flashes at 1/10 second
RINGING INTERVAL Button flashes every second
In Conversation Green light steady on

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CONFIGURATION GUIDE
CONFIGURING HT488 THROUGH VOICE PROMPT
DHCP MODE
Follow Table 3 with voice menu option 01 to enable HT488 to use DHCP.
STATIC IP MODE
Follow Table 3 with voice menu option 01 to enable HT488 to use STATIC IP mode, then use Option 02,
03, 04 to set up the HT488’s IP, Subnet Mask, Gateway respectively.
TFTP SERVER ADDRESS
Follow Table 3 with voice menu option 06 to configure the IP address of the TFTP server.
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

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CONFIGURING HT488 WITH WEB BROWSER
HT488 ATA 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 HT488 through a Web browser such as
Microsoft’s IE, AOL’s Netscape or Mozilla Firefox installed on Windows or Unix OS. (Macintosh OS does
not included).
Access the Web Configuration Menu
The HT488 HTML configuration page can be accessed via LAN or WAN ports.
•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 IP address of the LAN port. http://192.168.2.1. You
will see the log in page of the device.
•FROM THE WAN PORT:
1. Follow table 4 to find the WAN side IP address.
2. Open a web browser, type in the WAN side IP address – for example:
http://HT503-WAN-IP-Address
Note:
•WAN side HTTP access is disabled by default for security reason. You can enable HTTP access
on the configuration page by setting “WAN side HTTP access” to be YES.
•Initial access to the configuration pages is always from the LAN port. The instructions are listed
above.
•The IVR announces 12 digits IP address, you need to strip out the leading “0” in the IP address.
For ex. IP address: 192.168.001.014, you need to type in http://192.168.1.14 in the web browser.
END USER CONFIGURATION
Once the HTTP request is entered and 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 SETTING” configuration page.
Once this HTTP request is entered and sent from a Web browser, the HT488 will respond with the
following login screen:

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FIGURE 3: SCREENSHOT OF CONFIGURATION LOG-IN PAGE
The password is case sensitive with maximum length of 25 characters. The factory default password for
End User and administrator is “123” and “admin” respectively. Only administrator can get access to the
“ADVANCED SETTING” configuration page.
NOTE:
•If you CAN NOT log into the configuration page by using default password, please check with the
VoIP service provider. Most likely the VoIP service provider has provisioned the device and
configured for you therefore the password has already been changed.
After a correct password is entered in the login screen, the embedded Web server inside the HT488 will
respond with the Configuration pages which are explained in details below.
TABLE 7: HT488 DEVICE STATUS PAGE DEFINITIONS
MAC Address The device ID, in HEX format. This is very important ID for ISP
troubleshooting.
IP Address This field shows IP address of the HT488.
Product Model This field contains the product model info, such as HT488.
Software Version Program: This is the main software release. This number is always used for
firmware upgrade. Current release is 1.0.3.86
Bootloader: current version is 1.1.0.1.
HTML: current version 1.0.3.86.
VOC: current version is 1.0.0.13
System Uptime This shows system up time since last reboot.
Registered Whether the unit is registered to service provider’s server.
PPPoE Link Up This shows whether the PPPoE is up if connected to DSL modem
NAT This shows what kind NAT the HT386 is connected to. It is based on STUN
protocol. If the detected NAT is symmetric NAT, STUN will not work and
Outbound Proxy needed to make HT386 functioning correctly.

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TABLE 8: HT488 BASIC SETTINGS PAGE DEFINITIONS
End User
Password This contains the password for end user to access the Web Configuration
Menu. User can put new password here. This field is case sensitive with
maximum of 25 characters
Web Port This is the device’s internal HTTP server port. Default is 80.
IP Address - If DHCP mode is enabled, then all the field values for the Static IP mode are
not used (even though they are still saved in the Flash memory.) The HT386
will acquire its IP address from DHCP in the network.
PPPoE settings is usually for DSL/ADSL modem users. The HT will attempt to
establish a PPPoE session if PPPoE account is set.
- If Static IP mode is selected, the IP address, Subnet Mask, Default Router IP
address, DNS Server 1 (mandatory), DNS Server 2 (optional) fields need to be
configured.
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 This option is used by clients and servers to exchange vendor-specific
information. Default is blank.
Time Zone This parameter controls how the displayed date/time will be adjusted
according to the specified time zone.
Daylight Savings Time This parameter controls whether the displayed time will be daylight savings
time or not. If set to “Yes” and the Optional Rule is empty, then the displayed
time will be 1 hour ahead of normal time.
The “Automatic Daylight Saving Time Rule” shall have the following syntax:
start-time;end-time;saving
Both start-time and end-time have the same syntax:
month,day,weekday,hour,minute
month: 1,2,3,..,12 (for Jan, Feb, .., Dec)
day: [+|-]1,2,3,..,31
weekday: 1, 2, 3, .., 7 (for Mon, Tue, .., Sun), or 0 which means the daylight
saving rule is not based on week days but based on the day of the month.
hour: hour (0-23),
minute: minute (0-59)
If “weekday” is 0, it means the date to start or end daylight saving is at exactly
the given date. In that case, the “day” value must not be negative. If “weekday”
is not zero and “day” is positive, then the daylight saving starts on the first
“day”th iteration of the weekday (1st Sunday, 3rd Tuesday etc). If “weekday”
us not zero and “day” is negative, then the daylight saving starts on the last
“day”th iteration of the weekday (last Sunday, 3rd last Tuesday etc).
The saving is in the unit of minutes. The saving time may also be preceded by
a negative (-) sign if subtraction is desired instead of addition.
The default value for “Automatic Daylight Saving Time Rule” shall be set to
“04,01,7,02,00;10,-1,7,02,00;60” which is the rule for US.
Examples
US/Canada where daylight saving time is applicable: