eLYTE HDSL Optical Link

The eLYTE Optical Link family provides an electrical isolation solution for HDSL signals on copper lines into, through and out of an area where a fault situation could create a dangerous earth potential relative to the telephone network. A typical application is data transport from a cellular tower to the telephone network across an HDSL link.

The eLYTE HDSL Optical Link is designed for HDSL 1 (Classic 2B1Q), HDSL 2 and dual HDSL 2. HDSL 1 generally uses two copper pairs (4 wires). One eLYTE HDSL Optical Link is required for one HDSL 1 link. HDSL 2 service uses one copper pair. Up to two separate HDSL 2 connections can be used with the one eLYTE HDSL Optical Link.

The eLYTE HDSL Optical Link comprises two Cards connected by one pair of fibre optic cables. One Card is connected to the telephone equipment situated within the area of high voltage (Subscriber side), while the other is connected to the telephone line and is mounted in an area where there is no high voltage hazard (Central Office side).

The same eLYTE HDSL Card can be used on either the Central Office (CO) side or the Subscriber side. The primary function of the eLYTE Optical Link is to provide isolation from voltages while being “transparent” in the circuit. The CO Card converts the electrical HDSL signal for transmission over fiber optic cable. The Subscriber Card converts the optical fiber signal back into an electrical HDSL signal. Complete end-to-end HDSL system loop back testing is available.

The CO Card is powered from the 80V to 210VDC loop power, while the Subscriber Card is locally powered from a 24V to 48V supply. The eLYTE HDSL Cards detect which supply voltage to operate with and will automatically assume the role of a CO or Subscriber Card.

The eLYTE HDSL Optical Link is available in two fibre alternatives to match your distance requirements. Either ST or SC connecter options may be supplied.

  • Multi mode fibre – typically up to 3 km with alternatives available
  • Single mode fibre – typically up to 8 km with alternatives available

HDSL Install Brochure