MT90883 Datasheet, PDF (21/97 Pages) Zarlink Semiconductor Inc – TDM to Packet Processors

MT90880/1/2/3
Line Input Card
MT9076
Framer
MT90880
TDM-IP
Processor
PSTN
Line Input Card
MT9076
Framer
MT90880
TDM-IP
Processor
Line Input Card
MT9076
Framer
MT90880
TDM-IP
Processor
MVTX2604
Ethernet
Switch
Line Input Card
MT9076
Framer
MT90880
TDM-IP
Processor
IP
Router
Data Sheet
Remote Resource Pool
MT90880
TDM-IP
Processor
DSP
modem
pool
Remote Resource Pool
MT90880
TDM-IP
Processor
DSP
codecs/
echo can.
Remote Resource Pool
MT90880
TDM-IP
Processor
HDLC and
PPP
termination
Remote Resource Pool
MT90880
TDM-IP
Processor
Media
Interface
Packet
PSTN
Figure 2 - Multiservice Access Platform using the MT90880
4.2 Circuit Emulation Services
The MT9088x family can be used to transport TDM links across the packet domain and transparently reconstruct
the links at the far end (Figure 3). This is similar to the circuit emulation services defined by the ATM Forum, with
the MT9088x device providing the circuit emulation inter-working function.
The part is capable of handling circuit emulation of both structured and unstructured DS1 (T1) and E1 links. The
use of an Ethernet packet infrastructure for this facilitates the extension of TDM services between locations using
easy to manage and readily available network hardware.
The part supports dynamic bandwidth management, by providing the ability to add and delete timeslots from the
packet stream as required. A cross-connect service can also be provided by using an Ethernet switch to route
packet streams to different destinations.
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Zarlink Semiconductor Inc.