Chapter 3

Operations

This chapter provides the following information for the FOM-E1/T1 standalone modem:

FOM-E1/T1 front-panel indicators and controls

Operating procedures (turn-on, front-panel indications, performance monitoring and turn-off).

Installation procedures given in Chapter 2 must be completed and checked before attempting to operate FOM-E1/T1.

3.1 Front Panel Controls and Indicators

Figure 3-1shows the FOM-E1/T1 front panel. Table 3-1lists the FOM-E1/T1 controls and indicators.

 

TEST

 

ELECTRICAL

OPTICAL

 

 

NORM

REM

 

 

 

 

PWR

LOC

LOW

AIS

ERR

AIS

 

 

 

 

Figure 3-1. FOM-E1/T1 Front Panel

 

Table 3-1. FOM-E1/T1 Front Panel Controls and Indicators

 

 

 

Name

Type

Function

 

 

 

PWR

Green LED

ON – FOM-E1/T1 is powered up

 

 

 

LOC

Yellow LED

ON – A local loopback is active

 

 

 

REM

Yellow LED

ON – A remote loopback is active

 

 

 

TEST

Slide switch

LOC – Activates local analog loopback

 

 

REM – Activates remote digital loopback

 

 

NORM – Normal operation (no loopbacks are active)

 

 

 

ELECTRICAL LOW

Red LED

ON – E1/T1 electrical input is below G.703 level

 

 

 

ELECTRICAL AIS

Yellow LED

ON – E1/T1 electrical interface received "All 1s" string

 

 

 

OPTICAL ERR

Red LED

ON – Bit error rate of the signal received from at the optical

 

 

interface is 10-6or worse

OPTICAL AIS

Yellow LED

ON – Fiber optic interface received "All 1s" string

 

 

 

Front Panel Controls and Indicators

3-1

Page 27
Image 27
RAD Data comm operation manual Chapter Operations, FOM-E1/T1 Front Panel Controls and Indicators, Name Type Function

T1, E1 specifications

RAD Data Communication specializes in providing advanced networking solutions, particularly for E1 and T1 lines. These digital transmission systems are pivotal in telecommunications, allowing for efficient data transfer, voice communication, and multimedia services.

E1 and T1 lines are standardized digital circuits offering capacity for multiple channels. A T1 line, commonly used in North America, accommodates data transmission at a rate of 1.544 Mbps, while an E1 line, predominantly used in Europe and other parts of the world, supports a rate of 2.048 Mbps. Each line can carry multiple voice channels—up to 24 for T1 and 32 for E1—making them suitable for both voice and data services.

One of the main features of RAD's E1 and T1 solutions is their versatility. These lines can be utilized in various applications, including traditional telephony, private branch exchanges (PBXs), and modern Voice over IP (VoIP) networks. RAD's solutions enable users to seamlessly migrate from older systems to more integrated and efficient digital networks without sacrificing performance.

RAD Data Communication focuses on ensuring reliability and robustness in their E1 and T1 offerings. With built-in error detection mechanisms, such as cyclic redundancy check (CRC), these systems maintain high levels of data integrity. In addition, RAD’s devices often incorporate advanced features like Adaptive Rate Control, allowing for dynamic adjustments to accommodate varying network conditions.

Technology-wise, RAD integrates advanced protocols and features, such as Frame Relay and Multiprotocol Label Switching (MPLS), into their E1 and T1 equipment. This flexibility supports the transmission of diverse data types, ensuring users can transition smoothly between legacy systems and modern technologies.

Another characteristic that sets RAD's products apart is their management capabilities. Many devices come equipped with SNMP (Simple Network Management Protocol) support, enabling remote monitoring and management. This feature is essential for network administrators seeking to maintain optimal performance and quickly address potential issues.

Moreover, RAD's E1 and T1 solutions are designed for easy integration into existing network infrastructures. Their compact and modular design allows for straightforward installation and scalability, accommodating future growth and technology advancements without major overhauls.

In summary, RAD Data Communication’s E1 and T1 solutions are characterized by their reliability, versatility, and advanced management features. Designed to meet the evolving needs of communication networks, they ensure that users can take full advantage of both traditional and modern telecommunications technologies.