I am installing new PRI on existing SRG, the SRG used to use the CS1000 lines for inbound and outbound. Now they want to use the local PRI for inbound and outbound. When an inbound Target lines comes in it will ring a station then FWD to mailbox on the CS1000. The question is how do I program the SRG for the new PRI to route inbound and outbound calls. Thanks in advance.