Benefits of the PRI solution:
Please find below the benefits offered by a PRI line in comparison to an Analog line:
I). PRI line offers digital signaling till the customer's premises as against in the case of analog signal wherein the signal gets digital only at the service provider's premise. I.e. the entire last mile connectivity offers digital signaling through PRI connectivity.
II). Phone tapping in ISDN PRI is not possible at any point neither at the exchange level or the local DP level.
1. The digital signal offers the following benefits:
a). The call completion is improved as the signaling happens through D-Channel till the PBX.
b). The sound quality is also improved, as the digital signal is a better quality signal. The noise level is reduced due to the binary signals.
2. The PRI line offers DID (Direct Inward Dialing) facility that carries the following benefits:
a). There is no call waiting for an IVR / when the call is transferred through the operator
b). Everyone gets a direct number at his/her desk.
c). The CLI facility is activated on each extension. Moreover, the desired DID numbers appear on the third party phones when called outside.
d). There is a massive reduction of the traffic on the Epabx.
e). A single PRI line is sufficient for providing up to 100 level DID facility.
PRI requires the termination of only one physical pair into the PBX that minimizes cross talks and cross-connections over the lines. Moreover, the faults can be traced easily due to this, as there is an alarm at the exchange the moment the line is faulty.
One PRI is capable of handling the Incoming as well as Outgoing traffic in your exchange and there is no need of any further analog lines.