The ML-1/2 electrical copper interface and MLF-1/2 fiber optic interface modules connect Megaplex-2100/2104 to one or two E1/T1 lines.
Multiple main link modules can be installed in a single chassis, giving Megaplex a capacity of up to four full E1 links or five full T1 links, for both point to point and point-to-multipoint applications. Alternatively, multiple fractional E1/T1 links can be used.
The E1/T1 ring functionality can be configured in a single database, allowing an unlimited number of nodes per ring with protection speed of up to 5 seconds.
E1 link modules are compatible with all carrier-provided E1 services, meeting the requirements of ITU-T Recommendations G.703, G.704 and G.732. They support both two (256N) and 16 (256S) frames per multiframe formats. They also support CRC-4 and E bit, in compliance with G.704 recommendations. Zero suppression over
the lines is HDB3.
T1 link modules are compatible with all carrier provided T1 services, meeting ANSI and AT&T requirements. They support both D4 and ESF framing formats. Zero suppression methods – transparent coding, B7ZS, or B8ZS – can be selected separately for each link interface.
