The Digi (Sarian Systems) DR64 series of routers come with inbuilt ADSL modem (with an optional HSUPA backup modem), 4 x Ethernet ports, 1 x serial port as standard along with optional Wi-Fi, additional serial ports (1, 2 or 6 in total), ISDN or PSTN modules.

Digi (Sarian Systems) WR41-G and WR44-G series of routers come with an inbuilt Class 10 GPRS (32-48Kbit/s down, 16-24Kbit/s up) modem and 1 or 4 Ethernet ports as standard along with optional Wi-Fi, GPS, serial port (async or sync), ISDN & telemetry modules.

Digi (Sarian Systems) WR41-E and WR44-E series of routers come with an inbuilt Class 10 EDGE (236Kbit/s down, 59Kbit/s up) modem and 1 or 4 Ethernet ports as standard along with optional Wi-Fi, GPS, serial port (async or sync), ISDN & telemetry modules.

Digi (Sarian Systems) WR41-U and WR44-U series of routers come with an inbuilt HSUPA (7.2Mbit/s down, 1.4Mbit/s up) modem and 1 or 4 Ethernet ports as standard along with optional Wi-Fi, GPS, serial port (async or sync), ISDN & telemetry modules.

ISDN routers from Digi (Sarian Systems) including the WR41-I and the 4 port WR44-I. Legacy models such as the IR4420, IR2110B and TA2020B are now end of life.