MT90866 Mitel Networks Corporation, MT90866 Datasheet - Page 2

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MT90866

Manufacturer Part Number
MT90866
Description
WAN Access Switch
Manufacturer
Mitel Networks Corporation
Datasheet

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MT90866
Application Overview
The
applications that require high bandwidth switching
capability. With compliance to the ECTF H.110
specification, it is also suitable for using a compact
PCI platform.
While the Computer Telephony Interface (CTI)
industry is adopting the compact PCI platform over
VME, many manufacturers of telecom and datacom
equipment are also selecting this platform. The
compact PCI platform offers attractive features such
as hot swappable cards, integrated PCI and H.110
TDM
mechanical design. This new standard is replacing
the older ribbon-cable based bus standards such as
MVIP-90, H-MVIP and SCbus.
Carrier-grade access, switching platforms, wireless
base stations, and gateways (i.e. VOIP) may handle
multiple T1/E1, DS-3 or OC-3 streams for connection
to the WAN or PSTN. Multiple lower bandwidth
interfaces
bandwidth pipes for networking into a WAN or PSTN.
While these types of equipment serve different
applications and markets, many share a similar type
2
C64BYPS
STio31
RESET
MT90866
BCSTo
STio0
buses,
C20i
TM1
TM2
SG1
DT1
AT1
are
and
consolidated
is
Backplane
Converter
Interface
Control
APLL
S/P
P/S
HiZ
&
a
intended
rugged
DPLL
into
Output
for
Mux
backplane
Figure 1 - Functional Block Diagram
Backplane Data Memory
these
carrier-grade
Local Connection Memory
(4,096 channels)
V
DD
(2,432 locations)
higher
V
SS
and
Backplane Connection Memory
Microprocessor Interface
(4,096 locations)
Local Data Memory
Internal Registers &
(2,432 channels)
of internal architecture. Frequently, a mid-plane or
backplane
accommodate a TDM bus, for compatibility to TDM
interfaces (ISDN, Sonet, T1/E1, etc.), and a PCI bus,
for interfacing to LAN networks and the IP network.
In many cases, a Utopia bus may be present if ATM
is used as an uplink to the WAN or PSTN. Interfacing
into this midplane or backplane would be lower
bandwidth
bandwidth WAN uplink linecards.
By locating TDM switching on the linecard itself, as
opposed to a centralized switching card, system
designers
arrangement. In this case, the MT90866 allows for
local to backplane switching of DS-0 traffic from
trunks or local connection such as internal DSP
cards (compression, echo cancellation, modem
termination). Unique to the industry, the MT90866
provides backplane switching, eliminating the need
to move the traffic to the local streams and back.
This feature allows users to move traffic among the
backplane traces for routing to other destinations.
On the uplink linecard side, the MT90866 allows the
users to interface to multiple T1 or E1 or DS-3 or
OC-3 ports. With the ability to take 2,432 channels
from 4,096 channels on the backplane and to switch
Output
configuration
subscriber
employ
Mux
Local Interface
Preliminary Information
Timing Unit
Test Port
Converter
Interface
Converter
a
Interface
Control
ODE
Local
Local
P/S
S/P
HiZ
linecards
is
distributed
used,
IDDQ_EN
and
which
ST_FPo
ST_CKo
STo0
STo27
LCSTo
STi0
STi27
switching
higher
may

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