5
6
3.0 CONFIGURATION
The Model 2720 features configuration capability via hardware
DIP switches or a software control port. This section describes all pos-
sible hardware and software switch configurations of the NetLink-T1™.
3.1 DIP SWITCH CONFIGURATION
The Model 2720 has two eight bit DIP switches that allow configu-
ration for a wide range of applications. The switches are externally
accessable by removing the plate on the bottom side of the unit.
Figure 1 (below) shows the location of the DIP switches on the bottom
of the printed circuit board.
DIP Switches S1 and S2 can be configured as either “On” or “Off”.
Figure 2 (below) shows the orientation of the DIP switches with respect
to ON/OFF positions. Default position and descriptions for Switches
S1 and S2 are provided on pages 6-10.
2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product. This
product has been thoroughly inspected and tested and is warranted for One
Year parts and labor. If any questions arise during installation or use of the
unit, contact Patton Electronics Technical Services at (301) 975-1007.
2.1 FEATURES
• Terminates T1/FT1 Circuits over a 4-Wire RJ-48C interface
• Connects to standard CPE Serial Interfaces
• Common Framed nx56/64 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, External or Network Clocking
• Also Operates as a High-Speed Point-to-Point Modem
• Made in USA
2.2 GENERAL PRODUCT DESCRIPTION
The
NetLink-T1™ Model 2720 Series are single port T1/FT1
CSU/DSUs that provide high-speed WAN connectivity. Plugging directly into
the serial WAN port of a switch, router or multiplexer, the NetLink-T1™ pro-
vides T1 or FT1 access at connection data rates of 1.544 Mbps, nx64, and
nx56 (n=1 to 24 channels). The Netlink-T1™ is an excellent choice when
terminating leased line services, Frame Relay backbones, internet access
as well as LAN-to-LAN services.
The Netlink-T1™ provides digital access to a local WAN service
provider or directly between two facilities over a dedicated 4-Wire circuit.
WAN bandwidth, framing and coding options are programmed via externally
accessible DIP switches or via a VT-100 type terminal using the rear-
mounted EIA-232 Control Port. Netlink-T1™ supports D4/ESF framing
options and AMI/B8ZS/B7ZS line coding. Netlink-T1™ also supports a full
range of system and diagnostic features that make system setup easy.
The NetLink-T1™ provides T1 terminations over a modular RJ-48C jack
and comply with jitter tolerance capabilities as specified in ANSI T1.403 and
AT&T TR62411. External power options include 120VAC and universal
interface 100-240VAC. 48VDC and rack card versions are also available.
Figure 1. Underside of Model 2720, Showing Location of DIP Switches
Front
Rear
OFF
S1
S2
ON
1 2 3 4
ON
5 6 7 8
Figure 2. Close up of DIP switches showing ON/OFF positions.
