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D-Link DSL-2540B
ADSL2/2+ Modem with 4-Port Ethernet Router

D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router

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2-in-1 Device

Back View

The D-Link ADSL2+ Modem with Ethernet Router (DSL-2540B) is a 2-in-1 device that combines the function of a DSL modem and 4-port 10/100 Ethernet router. The DSL-2540B supports the latest ADSL2+ standards to provide higher performance (up to 24Mbps1 downstream and 3.5Mbps1 upstream) and longer reach from your Internet Service Provider’s (ISP) Digital Subscriber Line Access Multiplexer (DSLAM). You can also create a wired network to share your high-speed Internet connection, documents, photos, music, videos, printers, and Network Attached Storage (NAS).

Access High-Speed Internet

Unlike a dial-up Internet service, a DSL Internet connection is always on so that you do not have to wait to access the Web. Setting up the DSL-2540B is simple, it automatically detects your DSL settings to quickly establish a connection to the Internet. With support for TR-067, compatibility with your ISP’s infrastructure is ensured. This device also supports TR-069, which automatically updates the firmware and other settings when they become available from your ISP.

Advanced Networking

The DSL-2540B includes a built-in QoS engine that helps prioritize Internet traffic to enable smooth Internet phone calls (VoIP) and lag-free online gaming. In addition, this device includes Dual Active Firewalls (SPI and NAT) to help protect your network from potential attacks from across the Internet. With a built-in 4-port 10/100 Ethernet router, up to four network-ready computers or devices can simultaneously be connected to the DSL-2540B.

Whether it is for a home user who wants to share high-speed Internet access or for a small office that needs Internet access for conducting essential business activities, the DSL-2540B ADSL2+ Modem with Ethernet Router (DSL-2540B) is the ideal all-in-one broadband and wired networking solution.

Supports ADSL2+ standard for Easy Setup - no technical experience required

Access a high-speed DSL connection1 with firewalls and share your network

Connect up to 4 computers or other ethernet-enabled devices

DSL-2540B diagram
1 1-Year Limited Warranty available only in the U.S.A. and Canada

Technical Specifications:

D-Link DSL-2540B Specifications
Device Interfaces
  • RJ-11 ADSL port
  • 4 RJ-45 10/100BASE-TX Ethernet ports with auto MDI//MDIX
ADSL Standards:
  • ADSL: Multi-mode, ANSI T1.413 Issue 2, ITU-T G.992.1 (G.dmt) Annex A, ITU-T G.992.2 (G.lite) Annex A, ITU-T G.994.1 (G.hs)
  • ADSL2: ITU-T G.992.3 (G.dmt.bis) Annex A/L/M ITU-T G.992.4 (G.lite.bis) Annex A
  • ADSL2+: ITU-T G.992.5 Annex A/L/M
ADSL Data Rates
  • G.dmt: 8Mbps downstream, 832Kbps upstream
  • G.lite: 1.5Mbps downstream, 512Kbps upstream
  • ADSL2: 12Mbps downstream, 1Mbps upstream
  • ADSL2+: 24Mbps downstream, 3.5Mbps upstream
ATM & PPP Protocols
  • ATM Adaption Layer type 5 (AAL5)
  • Bridged or routed Ethernet encapsulation
  • VC and LLC based multiplexing
  • MAC Encapsulated Routing
  • PPP over ATM (RFC 2364)
  • PPP over Ethernet (PPPoE)
  • PPP Link Control Protocol (LCP)
  • Internet Protocol Control Protocol (IPCP)
  • PPP Authentication Protocol (PAP)
  • PPP Challenge Handshake
  • Authentication Protocol (CHAP)
  • Microsoft PPP CHAP extensions
Router Features & Network Protocols
  • Ethernet to ADSL Self-Learning Transparent Bridging
  • Internet Control Message Protocol (ICMP)
  • Network Address Translation (NAT), IP Static Routing, Routing Information Protocol (RIPv1, RIPv2)
  • Virtual Server, Port Forwarding
  • NAT ALGs: MSN/AOL/Yahoo Messenger, FTP, CUSEEME, Real Audio, MIRC, SIP, ICQ, games, SNMP
  • Dynamic Host Configuration Protocol (DHCP); DHCP server, client, and relay
  • SNTP, DNS Relay, DDNS proxy and IGMP proxy (v1/v2/v3)
Firewall/Access Security
  • Built-in NAT firewall
  • MAC Filtering
  • Packet Filtering
  • Stateful Packet Inspection (SPI)
  • Denial of Service prevention (DoS)
  • User Authentication PAP
  • User Authentication CHAP
  • DMZ
  • Web-based GUI configuration
  • 3-level login control for local/remote management
  • Firmware upgraded, configuration data uploaded and downloaded via Webbased GUI
  • TFTP for firmware, configuration files and image files upgrade and download
  • TFTP server and client
  • Code Lock to prevent from improper firmware upgrade through UI, TFTP, and TR-069
  • Telnet/SSH access for configuration (optional)
  • Local access via console (optional)
  • ADSL/ADSL2/ADSL2+ manual selection and auto fallback
  • Auto VPI/VCI detection
  • Configuration backup and restore
  • Diagnostics
  • Log & Trace function
  • SNMP v.1 and v.2c with MIB-I and MIBII (optional)
  • TR-069 compliant with ACS (optional)
Quality of Service
  • Traffic Prioritization/Classification
  • Port-based priority
  • 802.1p/q (0-7) priority
  • DiffServ-Codepoint IPQoS (TOS)
  • Application port-based priority
  • 4 priority queues per PVC
  • Traffic Shaping
  • IGMP v2 Snooping
  • Input: 100-240 VAC, 50/60 Hz
  • Output: 12v DC, 1A
  • Power switch
  • Factory reset button
Operating Temperature 32°F to 104°F (0˚ C to 40˚ C)
Storage Temperature -4°F to 149°F (-20˚ C to 65˚ C)
Operating Humidity -5% to 95% non-condensing
  • FCC Part 15 Class B
  • CE
  • CSA
  • ROHS
Warranty 1-Year Limited Warranty1
Minimum System Requirements
  • Subscription with DSL Internet Service Provider
  • Computer to Access Internet
Package Contents
  • ADSL2/2+ 4-Port Router/Modem
  • CAT5 Ethernet Cable (RJ-45)
  • CAT5 Ethernet Cable
  • USB Cable
  • Power Adapter
  • CD-ROM with:
  • Installation Wizard
  • Product Documentation
  • Special Offers
1 1-Year Limited Warranty available only in the U.S.A. and Canada


Download the D-Link DSL-2540B Datasheet (PDF).