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Three (3) DS0 TDM
BER measurement with 2 thresholds
Supports 2B+D and B1+D configuration
Loopbacks as described in TR-397
Responds to ANSI EOC messages
Provides six, 2-wire DDS circuits
Can provide system timing
Six (6) ISDN circuits per card

Three (3) DS0 TDM
BER measurement with 2 thresholds
Supports 2B+D, B1+D, B1, and B1+B2 configurations
In-band loopbacks as described in TR-397
Responds to ANSI EOC messages
Provides six, 2-wire DDS circuits
Can provide system timing
Six (6) ISDN circuits per card

One T1 (1.544 Mbps) interface per card
SF and ESF framing formats
Provisionable line coding
Front panel jack access for testing and monitoring
Dual memory support for upgrades
Easy provisioning via CLI or EMS

Operates as H2TU-C or H2TU-R
Dual flash memory banks for upgrade support
AMI/ZCS and B8ZS line coding
SF, ESF, Unframed, and Auto framing formats
Supports HDSL2 functionality defined in ANSI T1.418, Issue 2
Functions as an inter-terminal transport or service card
One HDSL2 T1 (1.544-Mbps) interface per card
Line-powering capability
Supports one ADTRAN range extender
Extensive loopback diagnostics and performance monitoring capabilities
Front panel jack access for test and monitoring
Intact asynchronous T1 delivery capability
Synchronous T1 delivery capability

Functions as an inter-terminal transport or service card
Supports HDSL4 functionality defined in ANSI T1.418, Issue 2
One HDSL4 T1 (1.544-Mbps) interface per card
Line-powering capability
Up to 45 kft repeatered T1 transmission on #24 AWG copper facilities
Up to 32 kft repeatered T1 transmission on #26 AWG copper facilities
Capacity for to power two line powered ADTRAN range extenders
Support Inverse Multiplexing over ATM with Tellabs 1000 MSAP IMA card
Intact asynchronous T1 delivery capability
Synchronous T1 delivery capability
AMI/ZCS and B8ZS line coding
SF, ESF, Unframed, and Auto framing formats
Operates as H4TU-C or H4TU-R
Dual memory support for upgrades
Interoperable with the T1X-XCVR card when an H4TU-C or H4TU-R is used
Compatible with other standards-based HDSL4 products

One T1 (1.544 Mbps) interface per card
Intact T1 transport
Customer T1 service capability
Line-powering capability
Front panel jack access for testing and monitoring
Dual memory support for upgrades

One T1 (1.544 Mbps) interface per card
Intact T1 transport
Customer T1 service capability
Front panel jack access for testing and monitoring
Dual memory support for upgrades
Easy provisioning via CLI or EMS

Support for T1 UNI ATM uplink
One T1 (1.544 Mbps) interface per card
SF and ESF framing formats
Provisionable line coding
Repeater power feed for up to six repeaters
Front panel jack access for testing and monitoring
Dual memory support for upgrades

Up to 132 lines (3 x 50-pair protector blocks)
Install an RBC36 cabinet onto a pole, H-frame, concrete pad or steel structure.
Extreme corrosion resistant
Designed and tested for superior environmental protection and thermal management
Long equipment and battery life, plus large battery reserve
Minimal acoustic signature and power consumption

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

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