16-Port T1/E1/J1 Transceiver

The DS26519 is a single-chip 16-port framer and line interface unit (LIU) combination for T1, E1, and J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. The DS26519 is nearly software compatible with the DS26528 and its derivatives.

Applications

* Channel Banks * Channel Service Units (CSUs) * Data Service Units (DSUs) * Muxes * Routers * Switches * T1/E1 Test Equipment

* 16 Complete T1, E1, or J1 Long-Haul/Short-Haul Transceivers (LIU Plus Framer)

* Independent T1, E1, or J1 Selections for Each Transceiver

* Software-Selectable Transmit- and Receive-Side Termination for 100Ω T1 Twisted Pair, 110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair, and 75Ω E1 Coaxial Applications

* Hitless Protection Switching

* Crystal-Less Jitter Attenuators Can Be Selected for Transmit or Receive Path; Jitter Attenuator Meets ETS CTR 12/13, ITU-T G.736, G.742, G.823, and AT&T Pub 62411

* External Master Clock Can Be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock is Internally Adapted for T1 or E1 Usage in the Host Mode

* Receive-Signal Level Indication from -2.5dB to -36dB in T1 Mode and -2.5dB to -44dB in E1 Mode in Approximate 2.5dB Increments

* Transmit Open- and Short-Circuit Detection

* LIU LOS in Accordance with G.775, ETS 300 233, and T1.231

* Transmit Synchronizer

* Flexible Signaling Extraction and Insertion Using Either the System Interface or Microprocessor Port

* Alarm Detection and Insertion

* T1 Framing Formats of D4, SLC-96, and ESF

* J1 Support

* E1 G.704 and CRC-4 Multiframe

* T1-to-E1 Conversion