Grandstream Networks GXW4216 User manual

Grandstream Networks, Inc.
GXW42XX series
16, 24, 32 or 48 FXS Ports
Analog IP Gateway
User Manual

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GXW42xx User Manual
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COPYRIGHT
©2017 Grandstream Networks, Inc. http://www.grandstream.com
All rights reserved. Information in this document is subject to change without notice. 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.
The latest electronic version of this guide is available for download here:
http://www.grandstream.com/support
Grandstream is a registered trademark and Grandstream logo is trademark of Grandstream Networks, Inc.
in the United States, Europe and other countries.
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 guide, could void your manufacturer warranty.
Safety Compliance
The GXW42XX adaptor complies with FCC/CE and various safety standards. The GXW42XX power
adaptor is compliant with UL standard. Only use the universal power adapter provided with the GXW42XX
package. The manufacturer’s warranty does not cover damages to the device caused by unsupported
power adaptors

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Table of Contents
CHANGE LOG................................................................................................................7
Firmware version 1.0.5.30 .....................................................................................................................7
Firmware version 1.0.5.28 .....................................................................................................................7
Firmware version 1.0.5.16 .....................................................................................................................7
Firmware version 1.0.5.8 .......................................................................................................................8
Firmware version 1.0.5.5 .......................................................................................................................8
Firmware version 1.0.4.22 .....................................................................................................................8
Firmware version 1.0.4.17 .....................................................................................................................8
Firmware version 1.0.4.7 .......................................................................................................................9
Firmware version 1.0.4.4 .......................................................................................................................9
WELCOME ...................................................................................................................10
Gateway GXW42XX Overview ............................................................................................................10
Safety Compliance...............................................................................................................................10
Warranty............................................................................................................................................... 11
CONNECT YOUR GXW42XX GATEWAY ....................................................................13
Equipment Packaging ..........................................................................................................................13
Connect the GXW42XX .......................................................................................................................13
GXW42XX FEATURES.................................................................................................19
Software Features Overview ...............................................................................................................19
Hardware Specification ........................................................................................................................21
GXW42XX LCD Menu .........................................................................................................................22
BASIC OPERATIONS...................................................................................................24
Understanding GXW Voice Prompts....................................................................................................24
Placing a Phone Call............................................................................................................................25
Phone or Extension Numbers.......................................................................................................25
Direct IP Calls ...............................................................................................................................26
Call Hold ..............................................................................................................................................27
Call Waiting..........................................................................................................................................27
Call Transfer.........................................................................................................................................27
Blind Transfer................................................................................................................................27
Attended Transfer .........................................................................................................................28
3-Way Conferencing ............................................................................................................................28

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Hunting Group......................................................................................................................................28
Inter-Port Calling ..................................................................................................................................30
Sending and Receiving Fax.................................................................................................................31
CALL FEATURES.........................................................................................................33
CONFIGURATION GUIDE............................................................................................ 36
Configuring GXW42XX via Voice Prompt............................................................................................36
Configuring GXW42XX with Web Browser ..........................................................................................36
Access the Web Configuration Menu ...........................................................................................37
Important Settings................................................................................................................................37
NAT Settings.................................................................................................................................37
DTMF Methods .............................................................................................................................38
Preferred Vocoder (Codec)...........................................................................................................38
Definitions .....................................................................................................................................38
Saving the Configuration Changes ......................................................................................................63
Rebooting from Remote.......................................................................................................................63
Configuration through a Central Server ...............................................................................................64
SOFTWARE UPGRADE ...............................................................................................65
Firmware Upgrade through TFTP/HTTP/HTTPS.................................................................................65
Instructions for Local Firmware Upgrade.............................................................................................66
Configuration File Download................................................................................................................66
Firmware and Configuration File Prefix and Postfix ............................................................................67
Managing Firmware and Configuration File Download........................................................................67
RESTORE FACTORY DEFAULT SETTING .................................................................68
Factory Reset.......................................................................................................................................68
Reset Button .................................................................................................................................68
IVR Command ..............................................................................................................................68
EXPERIENCING THE GXW42XX.................................................................................70

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Table of Tables
Table 1: Definitions of the GXW Connectors..............................................................................................15
Table 2: Definitions of the GXW Display Panel ..........................................................................................15
Table 3: GXW42XX Software Features......................................................................................................19
Table 4: Hardware Specification of GXW42XX Series Gateways..............................................................21
Table 5: Definitions of the GXW Voice Prompts.........................................................................................24
Table 6: Call Features Table (Star Code) ...................................................................................................33
Table 7: Status ...........................................................................................................................................39
Table 8: Maintenance .................................................................................................................................40
Table 9: Advanced Settings........................................................................................................................47
Table 10: Profiles........................................................................................................................................48
Table 11: FXS Ports ...................................................................................................................................62
Table of Figures
Figure 1: Diagram of GXW4216/24/32/48 Panel ........................................................................................14
Figure 2: 50 Pin Telco Connector................................................................................................................16
Figure 3: LCD Menu....................................................................................................................................22

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GNU GPL INFORMATION
GXW42XX firmware contains third-party software licensed under the GNU General Public License (GPL).
Grandstream uses software under the specific terms of the GPL. Please see the GNU General Public
License (GPL) for the exact terms and conditions of the license.
Grandstream GNU GPL related source code can be downloaded from Grandstream web site from:
http://www.grandstream.com/support/faq/gnu-general-public-license/gnu-gpl-information-download

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CHANGE LOG
This section documents significant changes from previous versions of GXW42XX user manuals. Only major
new features or major document updates are listed here. Minor updates for corrections or editing are not
documented here.
Firmware version 1.0.5.30
No major changes.
Firmware version 1.0.5.28
Added option to specify the priority for caller ID display [Caller ID Display]
Added option to save syslog locally. [Save Syslog]
Added option “Prefer Primary Outbound Proxy” to enable registration through primary outbound proxy
if registration expires. [Prefer Primary Outbound Proxy]
Added feature “White list for WAN side” and “Black list for WAN side” for remote management. [Access
Control Lists]
Added feature” Lockout time interval” to change banning time after too many failed login attempts.
[Lockout Time Interval].
Added option “Web Access Mode” to choose between “HTTPS” and “HTTP” to access device Web UI.
[Web Access Mode]
Added option “HTTPS Web Port” to set HTTPS web port instead of using default web port. [HTTPS
Web Port]
Added local firmware upgrade support. [Upload Device Firmware]
Change “Disable Telnet” option to “Disable SSH” option for more security. [Disable SSH]
Firmware version 1.0.5.16
Added option [DTMF-RELAY Tag Respect SIP INFO] [Use Request Routing ID in SIP Headers] for
Profile 1-4 audio settings.
Added the option of [Crypto Life Time] to support RTP settings.
Added option [Play busy/reorder tone before Loop Current Disconnect] for Profile 1-4 audio settings.
Added the option of [Disable Connected Line ID] to support not display the connected line ID.
Added the option of [Flash Digit Control] [Crypto Life Time] to overrides the default settings for call
control.
Added option to configure [Local RTP port].
Added the option to configure [SIP Registration Failure Retry Wait Time upon 403 Forbidden].
Added the option to enable/disable [Hold Target Before Refer].

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Added the option to enable/disable [Authenticate server certificate domain].
Added the option to enable/disable [Authenticate server certificate chain].
Added the option to configure [Trusted CA certificates].
Added the function of [Automatic Reboot].
Added the option to [Allow DHCP Option 42 to NTP Server] to support Time and Date settings.
Added the option to [Allow DHCP Option 2 to override time zone] to support Time and Date settings.
Added the option to enable/disable [3CX Auto Provision] to support multicast SUBSCRIBE for provision.
Firmware version 1.0.5.8
Added option [SIP REGISTER Contact Header Uses] [Use Request Routing ID in SIP Headers] for
Profile 1-4 to support NAT transfer feature.
Firmware version 1.0.5.5
Added option [Enable Fast RFC2833] to set DTMF duration by RFC2833.
Added SNMP support. Added [SNMP] section.
Added QoS settings for SIP and RTP packets. Rearranged options [Layer 2 QoS Settings] and [Layer
3 QoS Settings].
Added star code [*98] to play registration ID
Added star code [*99] to trigger provisioning process.
Added support to download device configuration file.
Firmware version 1.0.4.22
Added support for audio codec G.722
Added option [Always send HTTP Basic Authentication Information] to enable sending HTTP
authentication without server challenge
Added the options to enable/disable [Use P-Preferred-Identity Header] and [Use Privacy Header]
Added the options to enable/disable [Do Not Escape '#' as %23 in SIP URI]
Firmware version 1.0.4.17
Added option [Use Request Routing ID in SIP Headers] to enable/disable device to use configured
Request URI Routing ID for certain FXS port in its SIP message Header when a trunk SIP account is
used.
Added option [Add Auth Header on Initial REGISTER] to enable/disable including authentication header
in the initial REGISTER.

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Firmware version 1.0.4.7
Added option [Enable LLDP] to enable/disable LLDP.
Added field [Request URI Routing ID] to allow device to route the calls to individual FXS ports based on
the DID, when only have one sip registration.
Firmware version 1.0.4.4
Added option [Display Language] to choose language for LCD display.
Added option [Prompt Dial Tone Code] to configure dial code.

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WELCOME
Thank you for purchasing the Grandstream GXW42XX Analog FXSIP Gateway. The GXW42XX offers an
easy to manage, easy to configure IP communications solution for any business with virtual and/or branch
locations. The GXW42XX supports popular voice codecs and is designed for full SIP compatibility and
interoperability with third party SIP providers, thus enabling you to fully leverage the benefits of VoIP
technology, integrate a traditional phone system into a VoIP network, and efficiently manage communication
costs.
This manual will help you learn how to operate and manage your GXW FXS Analog IP Gateway and make
the best use of its many upgraded features including simple and quick installation, multi-party conferencing,
and direct IP-IP Calling. This IP Analog Gateway is very easy to manage and scalable, specifically designed
to be an easy to use and affordable VoIP solution for the small – medium business or enterprise.
Gateway GXW42XX Overview
The new GXW42XX series has a compact and quiet design and offers superb audio quality, rich feature
functionality, strong security protection, and good manageability. It is auto-configurable, remotely
manageable and scalable.
The GXW42XX series features 16, 24, 32 or 48port FXS interface for analog telephones, dual
10/100/1000Mbps network ports, and RJ21analog port. In addition, it supports the option of 4 SIP Server
profiles, caller ID for various countries/regions, T.38 fax, flexible dialing plans, security protection
(SIPS/TLS), comprehensive voice codec including G.711 (a/u-law), G.723.1, G.726(16/24/32/40 bit rates),
iLBC and G.729.
Safety Compliance
The GXW42XX is compliant with various safety standards including FCC/CE. Its power adapter is compliant
with UL standard.
Warning: use only the power adapter included in the GXW42XX package. Use of alternative power adapter
may permanently damage the unit.

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Warranty
Grandstream has a reseller agreement with our reseller customers. End users should contact the company
from whom the product was purchased, for replacement, repair or refund.
If you purchased the product directly from Grandstream, contact your Grandstream Support for an RMA
(Return Materials Authorization) number. Grandstream reserves the right to change the 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 contains links to GXW42XX GUI Interfaces. Please download these examples from
http://www.grandstream.com/sites/default/files/Resources/gxw42xx_gui.zip for your reference.
This document is subject to change without notice. The latest electronic version of this user manual is
available for download at:
http://www.grandstream.com/sites/default/files/Resources/gxw42xx_usermanual_english.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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CONNECT YOUR GXW42XX GATEWAY
Connecting the GXW42XX gateway is easy. Before you begin, please verify the contents of the GXW42XX
package.
Equipment Packaging
Unpack and check all accessories. Equipment includes:
one device unit
one RJ45 Ethernet cable
one 12V 5A universal power adapter (24V 6.25A for GXW4248)
mount
Connect the GXW42XX
Follow these four (4) steps to connect your GXW42XX gateway to the Internet and access the unit’s
configuration pages.
1. Connect standard touch-tone analog phones to the GXW42XX’s RJ21 port with a RJ11 to R21
cable.
2. Insert anRJ45 Ethernet cable into the WAN port of GXW42XX and connect the other end to an
uplink port (a router or a modem, etc.)
3. Plug the power adapter into the GXW42XX gateway into a power outlet.
Follow the instructions from the topic “Configuring GXW 42XX with Web Browser” for initial configuration.
The GUI pages will guide you through the remaining steps to set-up your gateway.

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Figure 1: Diagram of GXW4216/24/32/48 Panel

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Table 1: Definitions of the GXW Connectors
Ethernet port
Connect to the internal LAN network or router
RESET
Factory Reset button. Press and hold for a while to reset factory default settings.
DC IN
Power adapter connection
Analog port
Connect to analog phones / fax machines with an RJ21 to RJ11 cable
FXS ports
FXS port to be connected to analog phones / fax machines.
Note: Once the GXW42XX is turned on and configured, the front display panel indicates the status of the
unit.
Table 2: Definitions of the GXW Display Panel
Act LED
Remains ON if plug the network cable.
LINK LED
Indicates Ethernet port activity.
FXS LED
Indicate status of the respective FXS Ports on the back panel
Busy - ON (Solid Green)
Available - OFF
Slow blinking FXS LEDs indicates Voice Mail for that port.
All FXS LEDs slow blinking indicates provisioning.

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Pin
Signal
Pin
Signal
1
RING1
26
TIP1
2
RING2
27
TIP2
3
RING3
28
TIP3
4
RING4
29
TIP4
5
RING5
30
TIP5
6
RING6
31
TIP6
7
RING7
32
TIP7
8
RING8
33
TIP8
9
RING9
34
TIP9
10
RING10
35
TIP10
11
RING11
36
TIP11
12
RING12
37
TIP12
13
RING13
38
TIP13
14
RING14
39
TIP14
15
RING15
40
TIP15
16
RING16
41
TIP16
17
RING17
42
TIP17
18
RING18
43
TIP18
19
RING19
44
TIP19
20
RING20
45
TIP20
21
RING21
46
TIP21
22
RING22
47
TIP22
23
RING23
48
TIP23
24
RING24
49
TIP24
Figure 2: 50 Pin Telco Connector
Note:
For GXW4216, only first 16 pairs are connected.
For GXW4232, first 24 pairs on 1st RJ21 connector and first 8 pairs on the 2nd RJ21 connector are
connected.
For GXW4224 and GXW4248, the last pair of pin 25 and 50 on each RJ21 is not connected.
All LED lights display green when ON.
LINK LED and ACT LED blinking in following status indicate different network speed.

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10M: LINK and ACT all blink, ACT blinks faster than LINK
100M: LINK and ACT all blink, ACT blinks the same fast as LINK
1000M: LINK does not blink, only ACT blink
Slow blinking of FXS LED together indicates a firmware upgrade or provisioning state.

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GXW42XX FEATURES
The GXW42XX is a next generation IP voice gateway that is interoperable and compatible with leading IP-
PBXs, Soft switches and SIP platforms. The GXW42XX FXS gateway is auto-configurable, remotely
manageable and scalable. The GXW42XX gateways come in four models - the GXW4216, GXW4224,
GXW4232and GXW4248, each offering superb voice quality, traditional telephony functionality, easy
deployment, and 16, 24,32 and 48FXS ports respectively. Each model features flexible dialing plans,
integrated call routing to support a pure IP network call and an external power supply.
Software Features Overview
16, 24, 32 or 48FXS ports (no front panel FXS ports on GXW4248)
RJ-45 Ethernet ports
4 configurable SIP profiles
Supports Voice Codecs:
G711 (a/µ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A/B, iLBC, T.38
Fax
Comprehensive Dial Plan support for Outgoing calls.
G.168 Echo Cancellation,
Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss Concealment
(PLC)
Supports PSTN/PBX analog telephone sets or analog trunks
Table 3: GXW42XX Software Features
GXW4216
GXW4224
GXW4232
GXW4248
Telephone
Interfaces
16 FXS ports
24 FXS ports
32 FXS ports
48 FXS ports
SIP Provisioning
16 SIP accounts, 4
profiles
24 SIP accounts, 4
profiles
32 SIP accounts, 4
profiles
48 SIP accounts,
4 profiles
Network Interface
10/100/1000 Mbps, RJ-45
Number of
Concurrent Calls
(except when
using SRTP)
16 Concurrent
Calls
24 Concurrent Calls
32 Concurrent Calls
48 Concurrent
Calls

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Voice over Packet
Capabilities
Voice Activity Detection (VAD) with CNG (comfort noise generation) and PLC (packet
loss concealment), LEC with NLP Packetized Voice Protocol Unit (supports RTP and
AAL2 protocol), G.168 compliant Echo Cancellation, Dynamic Jitter Buffer, Modem
detection & auto-switch to G.711
Voice
Compression
G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.722,
G.723.1A, G.726(ADPCM with 16/24/32/40-bit rates), G.729, 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
DHCP Client only
Fax over IP
T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax
Pass-through,
Fax Datapump V.17, V.21, V.27ter, V.29 for T.38 fax relay
QoS
DiffServ, TOS, 802.1P/Q VLAN tagging
Transport
Protocol
RTP
DTMF Method
In-audio, RFC2833, and/or SIP Info
IP Signaling
SIP (RFC 3261)
Provisioning
TFTP, HTTP, HTTPS
Security
SRTP, IPSEC, TLS/SIPS, HTTPS, 802.1x
Management
Syslog support, HTTP/HTTPS and SSH access
Dial Plan
Yes
3-Way Conference
3-Way conference with local mixing
Caller ID
Bellcore Type 1 & 2, ETSI, BT, NTT, FSK and DTMF-based CID
Polarity Reversal /
Wink
Yes
Network
Connectivity
IPv4, IPv6, TCP/UDP, RTP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP,
TFTP, SSH, PPPoE, STUN