ISDN Features

Primary Rate Interface (PRI), Answering Calls

Primary Rate Interface (PRI), Answering Calls

Description

The system provides flexible routing of incoming PRI calls to help meet the exact site requirements. This allows PRI calls to ring and be answered at any combination of system extensions. Many of the options available to incoming analog trunk calls are also available to incoming PRI calls.

Delayed Ringing

Extensions in a Ring Group can have delayed ringing for PRI trunks - just like other types of trunks. If the PRI trunk is not answered at its original destination, it rings the DIL No Answer Ring Group. This could, for example, help a secretary that covers calls for their boss. If the boss doesn’t answer the call, it rings the sec- retary’s phone after a programmable time.

Calling Name Delivery

If provided by the telco, and depending on the version of your system software, the system can support call- ing name delivery in the Facility Information Element. With this information available, display telephone users can see the name of the calling party.

Caller ID

With Caller ID enabled, the system will provide information for ISDN calls that do not contain the Caller ID information. If the Caller ID information is restricted, the telephone display will show “PRIVATE”. If the system is not able to provide Caller ID information because the telco information is not available, then the display will show “OUT OF AREA”.

SMDR Includes Dialed Number

The SMDR report can optionally print the trunk’s name (entered in system programming) or the number the incoming caller dialed (i.e., the dialed ISDN digits). This gives you the option of analyzing the SMDR report based on the number your callers dial. (This option also applies to a DID trunk as well.)

Calling Party Number Notification

The system can provide calling party number notification for outgoing ISDN calls. When a call is made on an ISDN line by an extension, the system will send the identification for the extension placing the call, if it’s programmed. If there is no Extension Calling Number assigned, the system will send the calling number for the ISDN trunk. If both the extension and trunk information is programmed, the extension information will be sent as it takes priority.

When the option for calling party subaddress is on, the extension number will be sent as the subaddress infor- mation. Both the calling party number and calling party subaddress are sent in a SETUP message as the calling party information element and a calling party subaddress information element. Allow the system to send the subaddress by setting the following programs: 10-03-05=1, 15-01-04=1, 20-08-13=1, 21-13-01=enter number to be sent.

Calling Line Identification Presentation

CLIP display available with software 1.02+.

A Class of Service option has been added which can be used to allow the Calling Party Number IE in the Setup Message.

Calling Party Allowed or Prevented for Extension

Calling Party allowed for extension with software 1.04+.

The system allows the Calling Party Number for outgoing ISDN calls based on the extension’s set up in Pro- gram 15-01-04 : Basic Extension Data Setup - ISDN Caller ID. If this option is to be enabled, then it must also be enabled for the BRI or PRI PCB in 10-03-05 : PCB Setup - CLIP Information.

Aspire ISDN PRI Manual

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NEC ISDN-PRI manual Primary Rate Interface PRI, Answering Calls

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.