Key Features
Featured List

Modern organizations need access to omnipresent telecom networks like PSTN and the new-age internet telephony for the benefits of cost, convenience and quality. On the other hand, modern organizations with IP infrastructure cannot remain isolated from the PSTN. All such organizations need a multi-channel, transparent and flexible VoIP to PSTN gateway.

Matrix presents SETU VFXTH- The multi-channel SIP gateway offering seamless connectivity between VoIP and PSTN networks through multiple FXS and FXO ports. Matrix SETU VFXTH offers universal and transparent call routing irrespective of type of ports – VoIP-FXS, VoIP-FXO and FXS-FXO. Its superior call and signal processing capabilities ensure unrestricted flow of multiple calls with higher speed and better speech quality.

Let Matrix SETU VFXTH be your high-performance bridge to VoIP and PSTN networks.

SETU VFXTH is a family of multi-channel transparent and flexible VoIP to FXS-FXO gateways. On VoIP side, it supports SIP based IP interfaces allowing it to connect to any existing IP network. On the PSTN side, it supports FXS and FXO interfaces. SETU VFXTH supports universal routing facilitating calls between diverse port types. Further, intelligent Least Call Routing selects the most economical call route based on the destination number dialed on per call basis.

SETU VFXTH can register with multiple SIP Servers and IP-PBXs. Single SETU VFXTH can be used to interface with the enterprise IP-PBX for internal calls and public ITSP SIP Servers for international calls. Similarly on the PSTN side, few FXS/FXO ports can be used with the enterprise PBX while the other FXS/FXO ports can be interfaced with the PSTN for public calls.

SETU VFXTH offers extensive range of features including Programmable Access Codes, Allowed and Denies Numbers, Automatic Number Translation, CLI Based Routing, Emergency Number Dialing, Least Cost Routing, Peer-Peer Calling and CDR. On the network side it offers NAT/STUN, PPPoE, Fax over IP, Syslog debug, and others.

Key Features

Allowed and Denied Numbers

Allowed and Denied Lists are used to restrict dialing of long-distance and international numbers. A number is blocked if its prefix matches with any entry in the Denied Lists. On the other hand, a number is allowed to go through if it matches with any entry in the Allowed List. This provides flexibility of allowing only specific numbers, blocking all others.

Automatic Number Translation

This feature allows the Gateway to translate the number string dialed by the user to a format compatible with the network through which the call is to be routed. So, the user can dial numbers freely without worrying about the network through which the call will be routed.

Call Progress Tones and Rings

The gateway offers flexibility of programming call progress tones and ring cadence to match the standards of the country of installation. Country Specific Call Progress tones like Dial Tone, Ring Back Tone, and Busy Tone etc. can also be programmed.

Caller Line Identification and Presentation (CLIP)

SETU VFXTH can provide Caller Line Identification Presentation (CLIP) on FXS ports. Analog CLIP protocols such as DTMF, FSK ITU-T V.23 and FSK Bellcore 202A are supported by the gateway.

CLI based Call Routing

A call can be routed to a fixed number from the CLI presented on SETU VFXTH. When a call lands on the network ports of the SETU VFXTH, it detects the CLI, verifies the CLI and routes the call to the predefined number.

Call Detail Record (CDR)

SETU VFXTH can store details of 2000 calls in its memory. Call reports can be generated using filters like source port, destination port, calling number, called number, date, time and duration.

Day Light Saving

The Real Time Clock (RTC) of the SETU VFXTH moves forward or backward automatically in tune with the Day Light Saving requirement of the country where it is installed. The options like Week-Day-Month or Date-Month are provided to move the clock forward and backward automatically on the specified day, date and time.

Fax over IP (FoIP)

The Matrix SETU VFXTH user can send and receive Fax over SIP account, when the FAX machine is connected to the FXS port. The SETU VFXTH supports FoIP using T.38 Vocoder and Pass-Through.


The gateway offers FXO port to connect the PSTN network and route incoming calls to VoIP network or the extensions. It can also be used to connect extension of a PBX to network two PBX over VoIP.

Network Port Parameters

Web Jeeves of SETU VFXTH provides a configuration menu to program its network port parameters to match the LAN addressing scheme of the installation site. Parameters such as IP address, subnet mask, connection type, etc., can also be programmed through a telephone instrument connected to the system.

Peer-to-Peer Calling

SETU VFXTH support VoIP calls, between two locations without going through a proxy server. Fixed IP addresses of various locations can be programmed in the Peer-to-Peer table of the gateway to avail this facility. The gateway supports 500 entries in the Peer-to-Peer table. Numerical dialing codes can be defined to simplify the calling between various locations.

PIN Authentication

The gateway uses PIN Authentication to verify a caller’s identity before routing the call from one network to another. It is an important feature that prevents unauthorized usage.

Prefix to Domain Name Conversion

This feature enables the conversion of a numerical code dialed by the user to a domain name. It helps the SIP service provider to understand and route the call to the required destination.

Remote Held/Transfer

The user of SETU VFXTH can keep a called person at remote end on hold or even transfer the call to a third person. This feature can be activated only if the device at the called end supports Call Hold/Call Transfer feature.

SIP Accounts

A maximum of 32 SIP accounts can be programmed and each FXS user can be assigned one of the SIP accounts for outgoing calls. Dynamic allocation of SIP account is also possible using the Dial Plan. These SIP accounts can be from multiple service providers or all from a single service provider.

Universal Routing

Universal Routing allows the gateway to route a call received from one network to another based on the routing mechanism programmed in the system. A source port can be programmed for more than one destination port so that if one port is busy, the call can be routed through another port.

VLAN Tagging

A Virtual Local Area Network (VLAN) may be defined as a group of LANs that have different physical connections, but which communicate as if they are connected on a single network segment. VLANs increase overall network performance by grouping users and resources that communicate most frequently with each other.

Web Based Programming

Matrix SETU VFXTH incorporates Built-in HTTP server and web pages for easy configuration. This Web based programming feature allows a user to configure the gateway from any part of the world, once connected to the IP network


Featured List

Software Features

Allowed and Denied Numbers Fax over IP (T.38 and Pass-Through)
Attended/Blind Call Transfer Hotline
Automatic Number Translation MAC Cloning
Answer and Disconnect Signaling on FXS Port NAT and STUN Support
Answer and Disconnect Supervision on FXO Port PCAP Trace
Call Detail Record Peer-to-Peer Calling Table
Call Progress Tones PIN Authentication
Caller Line Identification and Presentation (CLIP) PPPoE
Conference Prefix to Domain Name Conversion
CLI on FXS Port Programmable Access Codes
CLI based Authentication Remote Held (SIP Accounts Only)
Date and Time Settings Remote Transfer (SIP Accounts Only)
Day Light Saving Mode Speech Gain Setting
Default the Configuration (System Default) Supplementary Services
Destination Number Determination Method - Call Forward
Destination Port Determination Method - Call Hold
Digest Authentication - Call Waiting
Do Not Disturb System Log Client
Dynamic DNS VLAN Tagging
Emergency Number Dialing Web based Programming