This duplex MMOF, patch cord is made from 2 x 2.0mm dia optical fibre duplex, orange coloured cord as standard. The cord is manufactured to recognized and approved industry standards, and will achieve a 20 year service lifetime, under typical operational conditions. The MMOF cord is capable of reliable operation in Exchanges or Repeaters over the temperature range of -20° to + 70° Celsius and up to high levels of RH. A duplex cord comprises two single fibre cords, joined side by side. The duplex cord is easily separated into single cords, if required. This cord can withstand 10 full turns (360°) twists over a one metre length, without causing any significant increase in attenuation. However for best performance when using the duplex cord, full twists are best avoided. The duplex optical fibre cord has the following features: 62.5µm core dia; 125µm cladding dia; and a 900µm tight buffered jacket. The cord has an aramid yarn (eg Kevlar) strength member provided under a LSZH sheath. A single optical fibre cord has the following features: minimum tensile strength of 100 N; an MBR of 30mm; ability to withstand a small crushing load; ability to withstand a small impact load; and ability to pass a standard edge bend test.