- Terminates E1/Fractional E1 service
- Available in low-cost standalone (2701) 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 approval
- Rack cards fit into Model 1001 access rack system
- 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 2701RC/D/D (X.21 version) provides DTE/DCE functionality in a 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.  The Model 2701RC/A/I is a 10Base-T bridge that operates over G.703/G.704 lines. It 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). It uses MAC learning and forwarding to provide seamless LAN-to-LAN connectivity. As a result, corporate enterprises can connect their servers to a pair of Model 2701s and automatically forward data packets that are meant for the remote network. Local packets are filtered and passed only to the local LAN. 
|
