High-density T1/E1/J1 transport solutions

30 January 2002 Telecoms, Datacoms, Wireless, IoT

IDT offers three new products that address the T1/E1/J1 transport requirements The octal T1/E1/J1 framer, T1/E1 octal line interface unit (LIU), and dedicated E1 octal LIU provide up to eight independent physical layer interfaces and support all telephony connectivity requirements to Class 5 Central Office switches. The octal framer provides a system interface to support 2, 4 or 8-Mbps pulse code modulation (PCM) highways in industry-standard formats, such as H-MVIP, MVIP, ST-Bus, GCI-bus and CHI-bus, to allow a seamless connection to TSI switches, HDLC controllers or system ASICs. It features three on-chip HDLC controllers per channel that can be used to implement full GR-303 or V5.2 layer 2 connectivity requirements. The two LIUs integrate clock and data recovery, short-haul line drivers and receivers, jitter attenuators, and enhanced diagnostic tools on-chip. The non-intrusive monitoring function supports G.772 standards. The LIU has extended receiver sensitivity which allows up to 20 dB loop attenuation.

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