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13.2 |
U.S. ISDN (for U.S. Only) |
Definition |
| In the United States, ISDN is offered by most local telephone companies. ISDN is an all-digital voice and data transmission technology. In contrast to analog transmissions, ISDN uses B (bearer) channels to carry voice and data traffic and a D (data) channel to carry customer call data and control signals. There are two basic types of ISDN interfaces. These interfaces are the primary rate interface (PRI) and the basic rate interface (BRI). |
| A PRI is for large commercial telephone systems and includes 23 B channels and a D channel. A BRI is for small or private telephony needs and consists of 2 B channels and 1 D channel. To configure these ISDN interfaces, users must know the type of HiPath 3000 system that they are configuring. The following are the ISDN interfaces that were designed to work with the HiPath 3000 system: |
| • | BRI with the HiPath 3350 and HiPath 3300 |
| • | Both PRI and BRI with the HiPath 3550 and HiPath 3500 |
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| HiPath 3000/5000 V9, Feature Description, Issue 7 | up  |
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| Disclaimer & Copyright | ID: P31003H3590F100017618 | 2012-06-25 |