GRANDSTREAM GXW42XX FXS Gateway User Guide

: June 29, 2024
: GRANDSTREAM

Table of Contents

GXW42XX FXS Gateway
Specifications:
Product Usage Instructions:
Configuration of the GXW42XX & Multiple HT841/HT881
HT841/HT881 Configuration:
- FAQ:
Q: How many HT8x1 FXO Gateways can be peered with a

GXW42XX FXS Gateway

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Specifications:

Supported Devices: HT841, HT881, GXW4216 v1, GXW4224 v1,
GXW4232 v1, GXW4248 v1, GXW4216 v2, GXW4224 v2, GXW4232 v2, GXW4248
v2
Firmware Required: HT841 & HT881 1.0.1.2+, GXW4216 v1 &
above 1.0.23.7+, GXW4216 v2 & above 1.0.21.2+

Product Usage Instructions:

Configuration of the GXW42XX & Multiple HT841/HT881

Scenario:

GXW42XX Configuration:

Set up STUN Settings.
Configure SIP Server for HT841.
Adjust NAT Traversal settings.
Configure SIP Registration Settings.

FXS Ports Configuration:

Map FXS1 with FXO1 of the HT8x1 to ensure correct call
routing.
Fill in the necessary fields like Map to FXO Port #1, Map to
FXO Gateway IP, and Port.

FXO Mapping:

Configure FXO Mapping settings on the HT841/HT881 device.

HT841/HT881 Configuration:

Set up STUN Server.
Adjust Channel dialing settings based on your preference.
Configure Unconditional Call Forward to VoIP settings as
needed.
Adjust FXO Termination Settings.

Results:

After completing the configuration between the GXW42XX FXS
Gateway and HT841/HT881 FXO Gateways, users can use analog phones
connected to the GXW42XX FXS gateways to reach outside PSTN lines
without a SIP server by setting up a peer trunk between the
devices.

FAQ:

Q: How many HT8x1 FXO Gateways can be peered with a

GXW42XX?

A: The GXW42XX can be peered with up to four HT8x1 FXO Gateways
since it supports four profiles to be configured.

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Grandstream Networks, Inc.
Peering GXW42XX FXS Gateway with HT8x1 FXO Gateways Configuration Guide

Peering GXW42XX FXS Gateway with HT8x1 FXO Gateways Introduction
A common scenario which involves a GXW42xx (FXS gateway) connected to an HT841/HT881 (FXO gateway) but doesn’t involve any SIP server. This scenario is useful when we want to deploy analog phones in our LAN with different PSTN lines connected to our FXO gateway. without the need to deploy a SIP Server. The illustration below demonstrates the set up we want to achieve:
GXW42xx & HT8x1 connection Note Please note in order for this setup to work, it is important that both the FXO gateway HT841/HT881 and the FXS Gateway GXW42xx are located on the same LAN OR have Public Static IPs. In short, both devices should be able to locate each other.
CONFIGURATION OF THE GXW42XX & MULTIPLE HT841/HT881 SCENARIO
GXW42XX CONFIGURATION
Maintenance Network Settings
· STUN Server Blank

STUN Settings
Profiles Profile 1
General Settings: · SIP server Set to IP address of HT8x1, followed by the default listening port for FXO port 1 defined on the HT8x1 which is 6060, we will enter the value 192.168.80.168:6060

Network Settings: · NAT traversal No

SIP Server set up for HT841

SIP Settings Basic Settings: · SIP registration No · Outgoing Call without Registration No · Local SIP Port 5060

NAT Traversal settings

SIP Registration Settings
Note If there’s a need to set up multiple HT8x1 FXO gateways due to a shortage of FXO ports or any similar configuration requirement, the same setup procedure should be applied to the second HT8x1 device. This involves configuring the SIP trunk with the second HT8x1 FXO gateway, specifically on profile 2 of the GXW42xx. GXW42xx can be peered with up to four HT8x1 FXO Gateways, since it supports four profiiles to be configured
FXS Ports
Port Settings: · Port 1 User ID: 5555 | Authenticate ID: 5555 | Name: 5555 | Profile : Profile 1 · Port 1 Enable FXS Yes This enables the GXW42xx to direct calls between the analog phone linked to port 1 of the GXW42xx via the FXO gateway connected through Profile 1. · Port 2 User ID: 7777 | Authenticate ID: 7777 | Name: 7777 | Profile : Profile 2 · Port 2 Enable FXS Yes This enables the GXW42xx to direct calls between the analog phone linked to port 2 of the GXW42xx via the FXO gateway connected through Profile 2

FXO Mapping
In this part, you can map FXS1 with FXO1 of the HT8x1 to make sure the call is routed through the correct port, the following fields will be filled
Map to FXO Port # 1: The FXO port 1 will be mapped to FXS 1 Map to FXO Gateway IP: Selects the IP address of the FXO gateway Port: Selects the FXO port that will be used to route the call, it is going to be the FXO 1 Port

FXO Mapping
HT841/HT881 CONFIGURATION
HT8x1 Ethernet Settings Advanced Settings
· STUN server Blank
STUN Server
HT8x1 FXO Profile 1 Channel Dialing
Dialing to PSTN: · Wait for dial tone No · Stage Method Setting this parameter to 1 will direct the PSTN call from the VOIP endpoint.

Channel dialing settings Note
Enabled (Wait for Dial Tone): Gateway waits for a dial tone before dialing. Suitable for lines with dial tones; users dial after hearing it. Disabled (No Wait for Dial Tone): Gateway doesn’t wait for a dial tone. Useful when no dial tone or automated dialing is needed.
HT8x1 Ports Unconditional Call Forward to VoIP
Calling to VoIP: · User ID: 7000 · Sip Server: 192.168.80.40 (IP Address of the FXS Gateway) · Sip Destination Port: 5060
Unconditional Call Forward to VoIP settings
HT8x1 FXO Profile 1 FXO Termination
Set the following: 1. Number of Rings 4 This is the number of rings the gateway will wait to send the call to the VOIP side in case the Caller ID has yet to be detected. 2. PSTN Ring Thru FXS No Disable this option to prevent calls from being routed through the FXS port.

FXO Termination Settings
HT8x1 FXO Profile 1 SIP Settings
General Settings · SIP Server: Set it to IP address of GXW42xx SIP Settings: · SIP registration No Network Settings: · NAT traversal No
Account Registration
SIP Settings
NAT Traversal Settings

Results
After the configuration is complete between the GXW42xx FXS Gateway and HT841/HT881 FXO Gateways, users from inside the LAN can use their analog phones connected to the GXW42xx FXS gateways to reach outside PSTN lines, without the need to deploy any SIP server, it only requires to set up peer trunk between the GXW42xx FXS Gateway and the HT841/HT881 FXO Gateways.

Supported Devices
Device HT841 HT881 GXW4216 v1 GXW4224 v1 GXW4232 v1 GXW4248 v1 GXW4216 v2 GXW4224 v2 GXW4232 v2 GXW4248 v2

Diagram of the connection results
Firmware Required 1.0.1.2+ 1.0.1.2+ 1.0.23.7+ 1.0.23.7+ 1.0.23.7+ 1.0.23.7+ 1.0.21.2+ 1.0.21.2+ 1.0.21.2+ 1.0.21.2+

Supported devices
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