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Patton Electronics T1-EtherRocket 2720
Compact T1 / FT1 CSU/DSU
with Integrated Ethernet Transparent Bridging

T1-EtherRocket 2720
Compact T1 / FT1 CSU/DSU with Integrated Ethernet Transparent Bridging
The T1-EtherRocket makes the connection of branch office LAN simple and affordable
Model 2720/I T1-EtherRocket
  Features & Benefits
  • Terminates T1 / FT1 Circuits over a 4-Wire RJ-48C interface
  • 10Base-T Ethernet Bridge
  • PPP (Point to Point Protocol, RFC 1661) with Bridge Control Protocol (RFC 1638)
  • Nx56/nx64kbps rates up to 1.536 Mbps
  • Unstructured rates at 1.544 Mbps
  • D4 or ESF Framing Modes
  • Supports AMI or B8ZS/B7ZS Line Coding
  • Configuration via Software Control Port or Internal DIP Switches
  • Six Easy-to-Read LED Indicators Monitor Data & Diagnostics
  • Internal or network clocking
  • Made in USA

T1-EtherRocket and Remote Router Porting
Patton Electronics introduces a new way of interconnecting remote branches to a Main Office LAN using the T1-EtherRocket. Called “Remote Router Porting” (RRP), it offers network managers and integrators a simple and economical way for LAN-to-LAN deployments.


LAN to T1 drawing

At the branch office, RRP replaces the traditional router and CSU/DSU solution with Patton’s EtherRocket Access Unit, which includes integrated T1 and 10Base-T transparent bridging. This unit allows for high-speed PPP data connections across the Wide Area Network at scalable data rates of nx56/nx64kbps up to 1.544Mbps, and also connects directly to the 10Base-T branch office LAN at 10Mbps. The T1-EtherRocket transparently forwards Ethernet packets to a headquarters LAN based on their destination MAC address.

At headquarters, RRP builds on the bridging capabilities of a router to extend their serial or WAN ports across town or across the country. In order for the central routed network to connect to a remote branch Ethernet network, the serial or WAN interface of the router needs to be configured as a PPP IP half-bridge. In this configuration the T1-EtherRocket sends bridge packets (BPDUs) to the router’s WAN interface. The router will then look at the layer-3 address information and will forward these packets based on its IP address. The router’s port, connected through the T1 network and T1-EtherRocket, appears as a virtual Ethernet interface at the branch office network.

The Model 2720/I T1-EtherRocket supports D4/ESF framing options and AMI/B8ZS/B7ZS line coding. Data rates, framing, and coding options are programmed by DIP switches or from a VT-100 terminal with menu-driven software. A full range of system and diagnostic features make setup simple and easy.

Ordering Information

2720/I/UI: Standalone T1 / FT1 CSU/DSU; 10Base-T (RJ-45) Interface; 100-240VAC supply
2720/I/48: Standalone T1 / FT1 CSU/DSU; 10Base-T (RJ-45) Interface; 48VDC supply


WAN Speed: 1.544 Mbps
WAN Connection: RJ-48C
Nominal Impedance: 100 Ohms
DTE Interface: EIA-530, V.35, Ethernet
Line Coding: AMI/B8ZS
Line Framing: D4/ESF/Unframed
Clock Options: Internal, or network
Diagnostics: Responds to CO-initiated D4 loop-up and loop-down codes, ESF line loop and payload loop FDL messages, and Universal Loopback de-activate messages
Transmit LBO: Selectable—0, 7.5, 15, or 22.5 dB, plus DSX-1
Standards: AT&T TR62411, TR54016, and ANSI T1.403
Dimensions: 0.78H x 2.1W x 3.5D in. (2.0H x 5.3W x 8.9D cm)
Test Modes: Initiates and responds to V.54 and CSU remote loops; local loop
Pattern Generator/Detector: User selectable 511, 2047, or QRSS
Power: Universal Input (100-240VAC), or -48VDC

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