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.
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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- Item(s) must be returned within 30 days from invoice date.
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