Functions of LEDs are as follows:

Fiber The green Fiber LED indicates reliable data on the fiber side

E1 The green E1 LED indicates reliable data on the G.703/G.704 side

LOS The red LOS indicates that syncronization between modems has not been established. Blinking red LOS LED indicates the presense of coding errors

NS The red NS LED indicates that the signal on the fiber side is too weak to be detected, which can be due to any of the fol- lowing reasons:

-break in the fiber optic cable

-length of the fiber optic cable exceeds the maximum dis- tance

-problem with Fiber LED.

ER Flashing red ER LED indicates errors in 511 test pattern

TM The yellow TM LED indicates that modem is in a test mode (Local/Remote Loopback or 511/511E test pattern). Opaque TM indicates normal operation.

5.3 TEST MODES

The following section describes the test patterns and loopbacks used in the Model 1186. The Model 1186 offers V.54 compliant local/remote loopback tests, plus a built-in V.52 BER test pattern gener- ator to evaluate the condition of the modems and the communication link. These tests can be activated physically from the front panel.

5.3.1 Local Loopback

The local loopback test checks the operation of the local Model 1186, and is performed separately on each unit. The following section describes how to perform a local loopback test between the Network and a local connection.

Any data sent to the local Model 1186 in this test mode will be echoed (returned) back to the user (see Figure 11). If two Model 1186 units are linked when the LAL is activated, data sent from the remote modem will also be looped back to the remote terminal equipment.

G.703/G.704

Network

Figure 11. Local Loopback Diagram

To test the local connection, follow these steps:

1.Activate LAL by moving the front panel toggle switch UP to "Local". Once the Local Loopback is activated, the Model 1186 transmit output will be connected to its own receiver. The TM LED will light up.

2.Perform a BER (Bit Error Rate) test on each unit using a separate BER tester. If the BER test equipment indicates no faults, but the data indicates a fault, follow the manufacturer's checkout procedures for the data terminal. Also, check the interface cable between the terminal and the Model 1186. The BER test can also be performed using a built-in 511/511E pattern generator. (See section 5.3.3 on how to use the built-in 511/511E pattern generator.)

3.Upon completion of the LAL test, return the front panel switch to the NORMAL position. The TM LED should turn off.

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Patton electronic 1186 user manual Test Modes, Local Loopback
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1186 specifications

The Patton Electronics 1186 is a cutting-edge device tailored for efficient transmission and reliable connectivity in various communication systems. Known for its robust performance, the 1186 primarily serves as a T1/E1 multiplexer that seamlessly integrates multiple telecommunication lines into a single, coherent channel. This advanced multiplexer is engineered for both reliability and flexibility, making it an essential tool for businesses looking to enhance their communication infrastructure.

One of the standout features of the Patton 1186 is its ability to support multiple digital communication protocols, including T1 and E1 lines. It can efficiently aggregate voice and data traffic, providing a versatile solution for businesses that require high-quality voice services along with data transmission. This capability is vital for companies that rely on voice over IP (VoIP) communications while maintaining a robust data network.

In terms of technology, the 1186 employs advanced digital signal processing to ensure the highest level of signal integrity. This results in minimal latency and optimal bandwidth utilization, crucial for maintaining quality in voice and data transmission. Additionally, the device supports various channelization options, allowing users to configure it according to their specific requirements, whether for voice, video, or data services.

Another characteristic that sets the Patton 1186 apart is its user-friendly interface. The device is equipped with an intuitive management system that simplifies configuration and troubleshooting. This ease of use is complemented by comprehensive diagnostic tools that help network administrators monitor performance and quickly address any issues that may arise.

Reliability is a hallmark of the Patton 1186, featuring robust physical construction that withstands harsh operating environments. Its longevity is further bolstered by built-in redundancy features, ensuring continuous operation even in the event of hardware failures. The device is designed for quick deployment, minimizing downtime during installation.

In summary, the Patton Electronics 1186 is an exemplary T1/E1 multiplexer that offers a unique combination of versatility, reliability, and user-friendliness. With its support for various communication protocols, advanced digital processing technology, and robust build, it stands as an ideal choice for businesses seeking to modernize their communication systems. Its ability to aggregate voice and data streams makes it an integral component of any modern telecommunication setup, paving the way for enhanced connectivity and operational efficiency.
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