RAD is a global leader for telecom access solutions. As an industry pioneer for over 40 years, RAD reliably supplies worldwide communications service providers and critical infrastructure operators with best-of-breed Ethernet access devices, industrial IoT gateways, 5G xHaul, and Operational WAN solutions. Offering always-on connectivity from anywhere, along with data-driven, AI-powered actionable insights, RAD is distinguished for its supply-chain stability, which outsteps the market in delivery times. Founded in 1981, RAD serves as the anchor of the $1.6 billion RAD Group, an umbrella of independent companies that develop diverse networking and data communications solutions.

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  • Datasheet


SHDSL.bis Modems

The ASMi-54 line includes the multi-port ASMi-54 advanced SHDSL.bis modem, the cost-effective ASMi-54L SHDSL.bis modem and the ASMi-54LRT managed SHDSL.bis modem with integrated router.

Point-to-point, hub-and-spoke and drop-and-insert connectivity over copper and fiber

The managed SHDSL.bis modems extend E1 and mid-band Ethernet services over multi-pair bonded copper links. Ensuring reliable performance over poor quality or noisy lines, the devices employ next-generation SHDSL technology and EFM bonding to achieve variable data rates of up to 22.8 Mbps. The ASMi-54 family is ideal for service providers, mobile operators, enterprises, utilities, and transportation companies. The devices feature a compact, half 19-inch enclosure, with optional rail-mountable metal enclosure for deployment in extreme temperature environments.

Key Take-Aways


E1 and mid-band Ethernet services over multi-pair bonded copper links


quality of service


up to 30 Mbps


services with built-in router

​​ASMi-54 Quick Specs

  • Up to four Fast Ethernet ports with an integrated switch or router (ASMi-54LRT); optional one (ASMi-54L, ASMi-54LRT) or four (ASMi-54) E1 interfaces
  • ITU-T G.991.2, ETSI 101524; TC-PAM 16 or TC-PAM 32
  • ASMi-54, ASMi-54LRT: up to 22.8 Mbps over 8-wire (4 pairs)
  • ASMi-54L: up to 11.4 Mbps over 4-wire (2 pairs), 5.7 Mbps over 2-wire (1 pair), or up to 30 Mbps over 4-wire using RAD’s high performance SHDSL technology
  • EFM bonding per IEEE 802.3-2005; M-Pair bonding for HDLC
  • VLAN prioritization, rate limitation per port and Ethernet QoS support; Ethernet OAM per IEEE 802.3-2005 (formerly 802.3ah)
  • Static NAT/NAPT routing; Solid FirewallTM protection for LAN and DMZ with ingress rate limitation; IPsec VPN support (ASMi-54LRT)
  • Managed via SNMP, Telnet and ASCII terminal

Data Sheet

ASMi-54 DataSheet


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