Class-5 Switch Replacement

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GR-303 64 Kbps datalink with EOC and TMC
Software downloadable
One to 28 DS-1s distributed among up to three discrete GR-303 groups
One DLP required per Tellabs 1000 MSA system (hot standby option available)
Operates with all Tellabs 1000 MSA transceivers (T-1, E-1, xDSL, fiber and wireless)

Synchronizes to an external composite clock timing source
In controlled environments, if the composite clock signal degrades, ETI provides Stratum 3E holdover using historical timing data
Provisionable Stratum levels: 3, 3 with 3E holdover, 4, and SONET
LET or RST operation (primary shelf)
Up to Stratum 3/3E free-run accuracy
Jitter and wander reduction of external timing source
A second ETI can be installed for standby operation

In controlled environments, if the composite clock signal degrades, ETI provides Stratum 3E holdover using historical timing data
Provisionable Stratum levels: 3, 3 with 3E holdover, 4, and SONET
LET or RST operation (primary shelf)
Up to Stratum 3/3E free-run accuracy
Jitter and wander reduction of external timing source
A second ETI can be installed for standby operation
Telcordia compliant design cabinet is expandable from four shelves to eight
Fiber splice and distribution options
-48 VDC powered cooling fans
Separate vented battery compartment and battery back-up options
Standard surge protection
Copper line protection in separate compartment (non-cross-connect configurations)
Hex key lock (padlockable for additional security)
Synchronizes to an external composite clock timing source

Telcordia compliant design cabinet is expandable from three shelves to four
Fiber splice and distribution options
-48 VDC powered cooling fans
Separate vented battery compartment and battery back-up options
Standard surge protection
Copper line protection in separate compartment (non-cross-connect configurations)
Hex key lock (padlockable for additional security)

Enables simple system expansion and control for expansion shelves
Supports transport of ATM, Ethernet and TDM traffic between shelves
Interfaces to an ELU-3 plug-in card in a primary shelf
Generates status updates to the CPU via the ELU plug-in card
CRC protection on the expansion link
Dual memory support for non-service affecting programming
Receives DDS timing from the primary shelf
Ability to derive timing reference from expansion shelf and transport it to primary shelf via the ELU plug-in card

Enables simple system expansion and control for expansion shelves
Supports transport of ATM, Ethernet and TDM traffic between shelves
Communications gateway between the CPU-3 and the expansion shelves
Dual memory support for non-service affecting programming
Ability to recover timing reference from the expansion shelf and provide it to the primary shelf
Provides composite clock P-Bits and N-Bits to the expansion shelf for DDS timing in the expansion shelf

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