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The CD-PRTA T1/PRI blade provides an interface for T1 and ISDN Primary Rate Interface (PRI) applications. This blade has a single 24-channel 64Kb per second digital signal circuit that can be configured for either T1 trunks or PRI. Each blade connects to the network via an NTI Network Termination.
- Mfr. Part #: 670118
If set for T1, the T1/PRI blade provides 24 trunks in a single universal slot. These trunks can be one of the following:
- Loop Start
- Ground Start
- E&M Trunks
- ANI/DNIS E&M Trunks
T1 provides advanced digital trunking and conserves universal slots. For example, a system with 12 loop start trunks, two tie lines and six DID trunks uses up to five universal slots. With T1, all these trunks are available in a single universal slot. This frees up four additional universal slots for other uses. If set for PRI, each T1/PRI blade provides 24 PRI (23 B & 1 D) channels running at 1.544Mbps with 64Kb/s clear channel. This blade supports the following PRI services:
- Basic PRI Call Control (BCC)
- Display of incoming caller’s name and number (when allowed by the telco)
- Speech and 3.1 KHz audio
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