NEC Understanding RJ48C Pinout for ISDN-PRI Connections

Models: ISDN-PRI

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ISDN Features

Primary Rate Interface (PRI) Installation

Figure 1: Satellite CSU Connection

Satellite 931 CSU

Terminal Interface Pinout for 8-Pin RJ48C Connector

Pin # Circuit Name

1RxD data (R)

2RxD data (T)

4TxD data (R1)

5TxD data (T1)

3, 6 No connection

7, 8 No connection

4

3

2

1

 

 

N

O

3 2 1 0

PRI Mode Enabled

4

3

2

1

 

 

N

O

3 2 1 0

T1 Mode Enabled

SW2

Block Switch

Status LEDs

SW100 Switch

SW101 Switch

Satellite 931 CSU

Network Interface Pinout for 8-Pin RJ48C Connector

Pin # Circuit Name

1RxD data (R1)

2RxD data (T1)

4TxD data (R)

5TxD data (T)

3, 6 No connection

7, 8 No connection

See Pin-Out Information

(For connection to T1 Network, use AT&T Type ABAM cable or equivalent) (individually-shielded twisted pair, rated at 100 ohms at 1 Mhz).

 

!

 

POWER

Satellite 931

 

INPUT:

T1

LOCAL (TI)

24-48 VDC

CSU

NETWORK EQUIPMENT

.2A MAX.

 

 

+V -V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RJ48C-toRJ48C Cable (ships

with Satellite 931 CSU)

Telco Line

RJ48

Jack

Aspire ISDN PRI Manual

9

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NEC ISDN-PRI manual RxD data R RxD data T TxD data R1 TxD data T1 No connection

ISDN-PRI specifications

NEC ISDN-PRI (Integrated Services Digital Network - Primary Rate Interface) is a telecommunication standard that provides high-capacity voice and data transmission over digital networks. Offering exceptional reliability, ISDN-PRI has become a crucial component for businesses seeking robust communication solutions. One of the standout features of NEC ISDN-PRI is its ability to support 23 voice channels, each capable of delivering clear and high-quality audio simultaneously. In addition to voice channels, ISDN-PRI can also handle one data channel, facilitating data transmission at speeds of up to 2.048 Mbps.

A significant characteristic of ISDN-PRI is its digital nature, allowing for efficient use of bandwidth and minimizing issues common in analog systems, such as signal degradation and noise. This technology leverages time-division multiplexing (TDM), which enables multiple voice signals to occupy a single transmission medium without interference. Each channel is allocated a specific time slot, ensuring a seamless communication experience.

NEC ISDN-PRI is also known for its features such as call setup and teardown capabilities. Utilizing the D channel, ISDN-PRI can establish and terminate calls quickly, enhancing overall call management and enabling businesses to handle high volumes of concurrent calls efficiently. Moreover, businesses can benefit from supplementary services, including caller ID, call forwarding, and call waiting, which enhance operational efficiency and customer service.

Security is another critical aspect of NEC ISDN-PRI. The technology includes features like encryption and secure access protocols, ensuring that sensitive data remains protected during transmission. These security measures are vital for businesses dealing with confidential information and seeking to comply with industry regulations.

Furthermore, ISDN-PRI is highly compatible with various telecommunication infrastructures, making it a versatile choice for organizations looking to upgrade or integrate their existing systems. The ability to connect to PBX systems and support multiple protocols adds to its appeal, providing businesses with scalability and flexibility as their communication needs evolve.

In summary, NEC ISDN-PRI stands out as a reliable and efficient communication solution. With its support for multiple voice channels, high data transmission rates, robust security features, and compatibility with various systems, ISDN-PRI is well-suited for modern business environments seeking to enhance their communication capabilities and improve overall operational efficiency.