Can we keep our existing phone system and still use the Strkr dialer?
Yes. The dialer runs on Strkr Messaging infrastructure by default, but a tenant can route outbound through an existing SIP trunk (RingCentral, Dialpad, Vonage, Twilio) if the compliance posture requires it. The CTI handoff carries the full caller ID, routing, and disposition flow regardless of trunk. The internal cost math usually favors Strkr Messaging because the local-presence pool is included, but the choice is a tenant setting.