tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 544

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
22 Cross Connect (XC) Block Functional Description
22.1 Cross Connect Introduction
The cross connect block is a highly configurable crosspoint switch for internal DS1/E1/DS2/DS3 signal connections
in the Super Mapper. The cross connect allows flexible configuration of the Super Mapper’s internal blocks to sup-
port a variety of applications. The internal 28-channel framer, VT mapper, SPE mapper, M13, digital jitter attenua-
tor, and test-pattern generator/monitor blocks or external device I/O pins can be interconnected with the
independent, nonblocking signal routing of the cross connect block.
22.2 Cross Connect Features
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Configurable crosspoint interconnect for up to 28 DS1 signals or 21 E1 signals to/from the framer (or external
pins), and the same number of signal channels to/from the M13 and VT mapper. Also supports up to seven DS2
signals to/from the external pins or M12 MUXes, connecting to the M13 MUX M23 block. Also connects one DS3
signal to/from the external NSMI interface to the SPE, M13, or TPG blocks. Any mix of DS1, E1, DS2, or DS3 sig-
nals may be interconnected.
Any transmitter (signal source) may be connected to any receiver (signal destination) in the DS1/E1 cross con-
nect. Multicast or broadcast operation (one port to many) is supported.
Jitter attenuation may also be inserted in-line on any DS1/E1 channel. (Note: Cascading of jitter attenuators is
not allowed.)
Standard network loopback or straight away facility testing is supported for DS1/E1 and DS3. Any source or
transmitter may be replaced by a test-pattern generator capable of injecting idle, standards based pseudoran-
dom bit sequence test patterns, or AIS (blue) alarm. Any sink or receiver may be replaced by a test-pattern mon-
itor, which can detect/count bit errors in a pseudorandom test sequence, or loss of frame, or loss of sync.
Loopbacks may be configured to sectionalize a circuit for identifying faults or misconfiguration during out of ser-
vice maintenance.
Fast alarm channels are supported for VT mapper or M13 to framer interconnects for alarm indication signal (AIS
or blue alarm) and VT mapper only for remote alarm indicator (RAI or yellow alarm). This feature reduces the
propagation delay of the alarms by eliminating multiple integration of alarm conditions.
Supports M12, M23 or C-bit parity, M13, or VT group modes of operation.
Supports framer-only, transport (framer LIU, M13, and VT mapper), and switching (CHI and PSB) modes of oper-
ation.
(continued)
Agere Systems Inc.
May 2001