Grandstream GXW4248V2 FXS Gateway, 48 Analog Ports, Gigabit, GDMS Managed

Overview

The Grandstream GXW4248V2 moves 48 analogue phone lines onto an internet phone system (SIP, Session Initiation Protocol) from a single rack unit. It connects existing analogue handsets, fax machines, door or lift phones and the extension lines of an old PBX to a SIP server or office phone system (IP PBX), so a building can keep its handsets and structured cabling while the phone system changes. It suits hotels, hospitals, hostels, schools and factories with many analogue extensions.

It is the second hardware version of the GXW4200 series and adds cloud management through GDMS (Grandstream Device Management System).

Is it right for you?

• Suits a place with up to 48 analogue extensions to connect to a SIP system, in a 19-inch rack or on a desk.
• For 16, 24 or 32 extensions, the GXW4216V2, GXW4224V2 and GXW4232V2 are the smaller models on the same platform, and they also have individual RJ11 ports.
• It connects phones (FXS ports). To bring landlines into the same phone system, pair it with an HT8x1 FXO gateway such as the HT841.

Key features

• 48 phone lines (FXS, Foreign Exchange Station) on 2 RJ21 50-pin Telco connectors, with two Telco cables in the box; there are no RJ11 ports.
• An independent SIP account for each of the 48 ports, with 4 SIP server profiles per system.
• 48 concurrent calls (fewer when SRTP encryption is used).
• One 10/100/1000 Mbps auto-sensing RJ45 network port.
• HD voice with G.722 and Opus, plus G.711, G.723.1, G.726-32, G.729 and iLBC.
• T.38 fax relay (up to 14.4 kbps) and G.711 pass-through, 3-way conferencing per port and message-waiting lamp support.
• Secure boot, a unique certificate and random default password per unit, dual firmware images, SRTP, TLS and HTTPS.
• Backlit graphic LCD on the front for status.

What else you need

• A SIP server or IP PBX, such as a Grandstream UCM.
• A network connection for the RJ45 port.
• A mains socket for the power adapter in the box (100 to 240 V AC in, 24 V DC 6.25 A, 150 W maximum).
• An RJ21 patch panel or punch-down block for the two Telco cables.

Installation

Mount it in a 19-inch rack with the front brackets in the box, or stand it on a desk (440 x 255 x 44 mm, 1U, 3.36 kg). All 48 lines run through the two RJ21 Telco connectors, so plan an RJ21 patch panel or punch-down block; there are no RJ11 ports.

A phone system installer should fit and configure it, since each port needs its own SIP account and the wiring usually runs through a patch panel.

Software and licences

Configure it from its web interface or provision it by TR-069, HTTP, HTTPS, TFTP, FTP, FTPS or GDMS. It works with IP PBXs, soft-switches and SIP platforms, and supports zero-configuration provisioning with the Grandstream UCM series.

Before you buy

• The power adapter, two Telco cables and rack brackets are in the box. All ports are on Telco connectors, so plan an RJ21 patch panel or punch-down block.
• A SIP server or IP PBX is required; the gateway does not make calls on its own.
• Package weight is 4.92 kg.