Telephony Primary Rate Interface PRI With 30 Bearer Channels

Product Specification

E1 / T1 PRI (Primary Rate Interface) Telephony Interface Module​

The Primary Rate Interface (PRI) is a standardized telecommunications service level within the Integrated Services Digital Network (ISDN) specification for carrying multiple DS0 voice and data transmissions between a network and a user.

PRI is the standard for providing telecommunication services to offices. It is based on the T-carrier(T1) line in the US and Canada, and the E-carrier(E1) line in Europe. The T1 line consists of 24 channels, while an E1 has 32.

PRI provides a varying number of channels depending on the standards in the country of implementation. In North America and Japan, it consists of 23xB (B channels(be/s). In Europe and Australia it is 30xB + 1xD on an E1 2.048 Mbit/s. One timeslot on the E1 is used for synchronization purposes and is not considered to be a B or D channel.

Primary Rate Interface for large organizations with 30 bearer channels and 2xD (D channel(delta channel)) (23 64-kbit/s digital channels + 1 64-kbit/s signaling/control channel) on a T1 (1.544 Mbit (PRI)), for larger applications. Both rates include a number of B-channels and a D-channel. Each B-channel carries data, voice, and other services. The D-channel carries control and signaling information.

The Primary Rate Interface (PRI) consists of 23 64-kbit/s B-channels and one 64-kbit/s D-channel using a T1 line, often referred to as "23B + D", (North American and Japanese standard) or 30 B-channels and two D-channels using an E1 line (Europe/rest of world), often referred to as "30B + 2D". A T1 Primary Rate Interface user would have access to a 1.472-Mbit/s data service. An E1 Primary Rate Interface user would have access to a 1.920 Mbit/s data service Larger connections are possible using PRI pairing.

QA

Q: Can ZYCOO's software be customized?
A: Yes, but there is a corresponding extra charge.

Q: Does ZYCOO support OEM/ODM?
A: Yes, ZYCOO also offers various types of embedded hardware boards for ODM and OEM customers.

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A: Please contact the ZYCOO sale department at zycoo@zycoo.com for quotes or additional information.

Q: What is the geographic availability For ZYCOO products?
A: Zycoo is globally available. Contact us today to get more information.

Q: For additional support or answers to questions not covered in this FAQ, who should I contact?
A: Please contact us at zycoo@zycoo.com
 

WHY CHOOSE US

• ZYCOO, is the leading developer and manufacturer of IP telephony devices and related systems, devoting itself over the past years to R&D powerful and scalable voice over IP (VoIP) solutions that mainly serve the SME market.

• With the deployment of distribution channels and branch offices in Czech Republic and UAE, ZYCOO products and solutions have been deployed in more than 100 countries and trusted by over 100,000 satisfied customers. Customers can enjoy direct sales, tech-support, training, and after-sale service while using ZYCOO products and solutions.

• Besides branded product, ZYCOO also offers various types of embedded hardware boards for ODM and OEM, as well as software modification or white-label. ZYCOO always keeps pace with the innovative VOIP technology and provides cost-effective products and services to customers.