FEATURES

LINE INTERFACE

? Each link can be configured as T1, E1 or J1

? Supports T1/E1/J1 long haul/short haul line interface

? HPS for 1+1 protection without external relays

? Receive sensitivity exceeds -36 dB @ 772 Hz and -43 dB @ 1024

Hz

? Selectable internal line termination impedance: 100 Ω (for T1), 75

Ω / 120 Ω (for E1) and 110 Ω (for J1)

? Supports AMI/B8ZS (for T1/J1) and AMI/HDB3 (for E1) line encoding/

decoding

? Provides T1/E1/J1 short haul pulse templates, long haul LBO (per

ANSI T1.403 and FCC68: 0 dB, -7.5 dB, -15 dB, -22 dB) and userprogrammable

arbitrary pulse template

? Supports G.772 non-intrusive monitoring

? Supports T1.102 line monitor

? Transmit line short-circuit detection and protection

? Separate Transmit and Receive Jitter Attenuators (2 per link)

? Indicates the interval between the write pointer and the read pointer

of the FIFO in JA

? Loss of signal indication with programmable thresholds according

to ITUT-T G.775, ETS 300 233 (E1) and ANSI T1.403 (T1/J1)

? Supports Analog Loopback, Digital Loopback and Remote Loopback

? Each receiver and transmitter can be individually powered down

FRAMER

? Each link can be configured as T1, E1 or J1

? Frame alignment/generation for T1 (per ITU-T G.704, TA-TSY-

000278, TR-TSY-000008), E1 (per ITU-T G.704), J1 (per JT G.704)

and un-framed mode

? Supports T1/J1 Super Frame and Extended Super Frame, T1 Digital

Multiplexer and Switch Line Carrier - 96, E1 CRC Multi-frame

and Signaling Multi-frame

? Signaling extraction/insertion for CAS and RBS signaling

? Provides programmable system interface supporting MitelTM STbus,

AT&TTM CHI and MVIP bus, 8.192 Mb/s multiplexed bus and

1.544 Mb/s or 2.048 Mb/s non-multiplexed bus

? Three HDLC controllers per link with separate 128-byte transmit

and receive FIFOs per controller

? Programmable bit insertion and bit inversion on per channel/

timeslot basis

? Provides Bit Oriented Message (BOM) generation and detection

? Provides Automatic Performance Report Message (APRM) generation

? Detects and generates alarms (AIS, RAI)