T-1 Over Two or Four wires for Long Distance

• Extend T1 or E1 over 1 or 2-pair wires
• Extend up to 8 miles, depending on wire gauge and number of pairs
• Setup via front panel or serial console port
• DTE interface options in addition to T1 are V.35, EIA530, X.21, RS449
• Line rates up to 2056 Kbps
• Uses industry standard G.shdsl line format
• Each unit can be set as master or slave
• A 16-unit mount chassis is available
• Each rack card shares a controller card with front panel keys and 2-line by 40 character LCD display, with optional Ethernet, SNMP, and telnet

• Extend T1 or E1 over 1 or 2-pair wires
• Extend 2 miles to 8 miles, depending on wire gauge
• Setup via front panel or serial console port
• DTE interface options in addition to T1 are V.35, EIA530, X.21, RS449
• Line rates up to 2056 Kbps
• Uses industry standard G.shdsl line format
• Each unit can be set as master or slave
• A 16-unit mount chassis is available
• Each rack card shares a controller card with front panel keys and 2-line by 40 character LCD display, with optional Ethernet, SNMP, and telnet

see Manual PDF and

H-3300_Quick_Start_Guide.pdf

The H3300 is ideal for extending the T1/E1 demarcs on a campus, in a shopping mall, in a large building. It can use twisted phone pairs or Cat5 cable. One pair or two pair can be used. Two pairs offer greater distance. See the distance chart under specifications.

The H3300 is very easy to install. One unit is set as master, the other as slave. Only the master needs to be set. The H3300 makes it very simple to extend a T1/E1 demarc or install a local bridge or router.

A rack version is available for central office or central site use, while a stand alone version is intended for customer premises installation. Either version, installed in pairs, can provide: 1) a T1/E1 link, 2) a high speed data link with DTE interfaces, or 3) a data access to T1/E1 with DTE interface at one end and T1/E1 at the other.

For larger systems using a rack version with the shared common controller card, the H3300 supports configuration and diagnostics using keypads and LCD display on the front panel, or from a local or remote terminal. This enables users to execute in-service diagnostics and fault isolation.

Applications
Loop-H 3300 must be used in pairs. One is configured as master, and the other slave. The master unit is usually located in central offices and is usually a rack-mounted model. The slave unit is usually located atcustomer's premises and is usually a stand-alone model. Both the LCD version of the stand-alone model and the rack-mounted model can be configured as either master or slave.

The Loop-H 3300 application examples are illustrated in Figure 1-1. This application essentially replaces existing or planned requirements where E1 lines are normally used. The E1 line repeater requirements and the copper conditioning requirements are considerably eased. The result is significant savings in loop plant cost when compared to E1 technology. A similar application for T1 transport is also possible.

In the next example (b), a pair of Loop-H 3300 has V.35 interfaces. In the top example (a) which is not applicable to this Loop-H 3300 DTE model of Figure 1-2. They are connected by a single pair of twisted copper wires, the 16PAM line. This application provides high-speed data transport over twisted copper wires. The spanning distances are longer for rates 768 Kbps and below. If the speed is above 768 Kbps, two pairs are necessary.

In the bottom example (c) and (d) of Figure 1-1, one unit of a pair of Loop-H 3300 is equipped with a V.35 interface and the other with an E1 interface. This allows remote data access to an E1 network. The data rates can be n*64 Kbps where n can be 1 to 32. If n are less than 31, fractional E1 services is provided. Depending on n, and depending on line speed one or two pairs of 16PAM lines are needed to interconnect the two Loop-H 3300 units.

see Manual PDF and

H-3300_Quick_Start_Guide.pdf

SPECIFICATIONS

• G.shdsl transport betwen H3300 units
• T1 user interface, E1 120 or 75 ohm are also available
• Other special order interfaces: RS232, RS530, V.35, X.21, Ethernet Bridge, Ethernet Router

Port Specifications

• Connectors:
• Front panel DE-9 console port
• Rear panel
  • RJ45 for G.shdsl
  • User Interface:
    • Rear panel RJ45 for T1, 120 ohm E1,
    • BNC for 75 ohm E1,
    • DB25 for V.35,
    • M34 for V.35,
    • DB25 for RS530, RS232
    • DA-15 for X.21
    • RJ45 LAN for Bridge or Router

Front Panel Controls/Indicators

• Left arrow, Right arrow, ESC, ENTER
• LCD: 2-line by 40-character
• G.shdsl LEDs: Power, Loop1 status, Loop2 status, Test, Alarm
• DTE Interface LEDs: RTS, TD, Test, RD, Clock Loss
• T1 Interface LEDs: Sync, Test, Yel, AIS, BPV

Physical/Electrical

• 8 1/2 x 2 1/8 x 11 1/4 in (215 x 55 x 285 mm)
• 7 Watts maximum
• 100-240 VAC standard, 20-60 VDC optional
• Operating temperature: 0 to +50 C, non-condensing relative humidity

The distances achievable with 16PAM technology are dependent of the wire size and operating environment. The following table should be used only as a rough guide. The actual distance depends on many environmental factors. Maximum is for no noise. Typical is with 0dB ETSI noise.

By laws of physics, G.SHDSL should reach about 20% longer than HDSL. Some say 40%, that is if you are lucky.

Because of the different modulation method, G.SHDSL has a lower frequency band. Loss of copper cable is proportional to the square root of the frequency. Thus if you half the frequency, you get 1.414 times the distance. G.SHDSL is about 40% lower in frequency compared to HDSL, thus has only 20% more reach.

The distance you can reach is determined not by loss alone. Cross-talk also plays an important part. Thus if you avoid the frequencies where cross-talk noise is present, you can also reach longer distances. Cross-talk is proportional to frequency. Therefore, if you reduce the frequency by 40%, by cross-talk consideration alone you get 40% more reach. Nothing is quite so simple.

see Manual PDF and

H-3300_Quick_Start_Guide.pdf