Hot Products

Sale Items



Tech Info


Used Gear



Patton Electronics 2701
G.703/G.704 Network Termination Unit (NTU)

Patton Model 2701
G.703/G.704 Network Termination Unit (NTU)
This device terminates G.703/G.704 lines and provides E1/Fractional E1
Model 2701
  Features & Benefits
  • Terminates E1/Fractional E1 service
  • Available in low-cost standalone or rack-mountable versions
  • n x 64 kbps data rates to 2 Mbps
  • X.21, V.35, EIA-530 and Ethernet bridge options
  • Switch-selectable AMI or HDB3 line encoding options
  • Switch-selectable DTE/DCE modes for X.21 version
  • 75-ohm dual coax and 120-ohm twisted-pair G.703 connections
  • Local and remote loopback diagnostics
  • Internal, external and G.703 network timing
  • CE and BABT approvals
  • 90—260VAC & 48VDC power options
  • Conforms to ONP requirements CTR 12 and CTR 13 for connection to international Telecom networks

Today’s customers require low-cost network solutions that deliver high speed connections to the Internet and Corporate Intranets while supporting videoconferencing and many other wide-area services. The NetLink Model 2701 E1/Fractional E1 NTUs satisfies those needs.

The NTUs terminate G.703/G.704 services for all n x 64 kbps rates and connect to the customer’s router, FRAD, CODEC, and switches with a V.35, X.21, EIA-530, or 10Base-T Ethernet interface.

The Model 2701/D (X.21 version) provides DTE/DCE functionality in the same standalone or rack-mount package. This added versatility supports operation in X.21 DTE applications (see diagram below) where an NTU is needed to terminate G.703/G.704 and provide X.21/V.11 data to a multiplexer.

Our Ethernet version, the Model 2701/I offers 10Base-T bridging and supports PPP and 802.1q VLAN tagging, passing vLAN-tagged packets of up to 1522 bytes. These features enable customers to extend a router's serial interface and connect to a remote 10Base-T Ethernet LAN (see diagram below). The 2701/I uses MAC learning and forwarding to provide seamless LAN-to-LAN connectivity.


Ordering Information
2701/B/UI Stand alone NTU; EIA-530 (DB25F) interface; 90—260 VAC supply
Stand alone NTU; V.35 (M/34F) interface; 90—260 VAC supply
Stand alone NTU; X.21 (DB15F) interface; 90—260 VAC supply
Stand alone NTU; 10Base-T (RJ-45F) interface; 90—260 VAC supply
Stand alone NTU; V.35 (M/34F) interface; -48 VDC supply
Stand alone NTU; X.21 (DB15F) interface; -48 VDC supply
2701/I/48 Stand alone NTU; 10Base-T (RJ-45F) interface; -48 VDC supply


Data Rate: Smooth Clock 2.048 Mbps
Network Connector: RJ-48C (all versions); Dual Coaxial (X.21 and Ethernet)
DTE Interface: EIA-530, X.21/V.11, V.35, or 10Base-T Ethernet
Line Coding: AMI or HDB3
Line Framing: G.703 (unframed) or G.704/G.732 (framed)
Clocking: Internal, External or Receive Recover
DTE Rates: nx64kbps (EIA-530, X.21/V.11, V.35); 10Mbps (10Base-T)
Indicators: E1 Link Status, TD, RD, Loss of Sync, Error, Test Mode, Ethernet Status (on 10Base-T Version)
Diagnostics: Local/Remote Loop, 511
Line Isolation: 1500VRMS
Compliance: CE Mark, G.703, G.704, G.723, G.832, CTR-12 and CTR-13
Temperature: 32° to 122°F (0° to 50°C)
Rel. Humidity: 5 to 90% non-condensing
Dimensions: 5.84L x 4.16W x 1.51H in (14.84L x 10.6W x 3.84H cm)
Weight: 2.225 lbs (1.02 Kg)

Patton Electronics Products


Sales Ext 17   Support Ext 25

© 2018 Data Connect Enterprise
Olandwood Court
Olney, Maryland 20832