Another good ADSL router is in the market 'The SpeedTouch 780WL'. This device provides a standard gateway router capability with your broadband connection with a USB, Ethernet and Wireless ports. You can make use of your conventional telephone handset to make any SIP based VoIP (Voice over IP) calls anywhere around the world depending upon your service subscription level. The SpeedTouch 780WL provides backward compatibility to an ADSL network. With the use of ADSL2+ support very high speed internet connection can be experienced and any future releases to product firmware are easily available to rewrite the hardware setting to extend the support using Annex M which can stretch your internet connection speed to almost 2Mbps. Features Includes

• A standard 802.11b/g Wi-Fi connection
• It also support Wireless Distribution System (acting as a repeater boosting signal)
• 4 Ethernet Ports with 10/100 MDI/MDI-X autosensing capabilities
• ADSL2/2+ built-in modem
• Built-in Firewall
• WPA and WEP encryption
• An integrated UPnP support
• User registration button
• NAT-ing to enable communication between LAN and WAN (VoIP, VPN etc)
• Easy setup guide and instruction for United Kingdom region
• Customer user defined filters and MAC level filtering

Detailed Product Specifications about the WAN interfaces:

• 1x RJ11 ADSL, ADSL / 2 / 2+ and
• 1x FXO (PSTN)

LAN interfaces:

• 4x RJ-45, 10/100 Ethernet Ports
• 2x FXS (Voice)
• 802.11b/g Wi-Fi

Router Features:

• PPPoA connectivity with BT and Kingston Exchange Lines (UK setup)
• Configure VoIP using setup wizard
• A user friendly firewall interface
• Custom Standard and Content filters
• TR-69 management compatible
• QoS to ensure bandwidth management
• Secure Wi-Fi encryption with WPA and WEP.

Voice Features includes

• Basic incoming and outgoing call with call waiting, 3-way call conferencing
• Call forwarding and Transferring with CallerID
• Call Control using MGCP (RFC2705) or SIP (RFC3261)
• G.711 (a-law and u-law), G.723.1A, G726 and G.729A based Voice Codec
• UK signal tone compliance
• RTP based voice compliance according to RFC1889
• It supports DTMF based tone detection for dial tone, callback tone, busy tone, ring tone etc
• RTP payload for DTMF digits, telephone tones and telephone signals are supported as per RFC2833
• In compliance to G.168 it helps in Echo reduction/Cancellation
• FAX and analog modem support with various other functions
• Fax relay based on T.38 standard
• We will get 2 VoIP (FXS) ports for incoming and outgoing VoIP phone calls where both VoIP ports can be used to take a lifeline backup
• You will an option to select between a PSTN call mode and VoIP call mode giving you an extra feature to get on to your desired calling method.
• To dial any emergency number the phone automatically switched over to PSTN mode