Carrier Pre-Select (CPS) is a fully automated solution that allows your customers a simple way of choosing you to handle their outgoing telephone calls. For you there’s no need to invest in new equipment and your customers don’t have to dial a special prefix when making a call.
It’s available on a per-line basis to anyone who uses a PSTN or ISDN line. You just choose which types of calls can use the service and then bill your customers directly for what they use. They will receive a separate bill that covers their line rental and any other line related services they may have.