B737 Undifferentiated or Other Model
Air Traffic Control Fully Certified
Situational Awareness
ATC Issue All Types; Conflict NMAC
General None Reported / Taken
Human Factors
I was informed that a Cessna 172 filed a NMAC. I am now filing a report as well. A B737 was descending on [a STAR] landing ZZZ. The C172 was VFR southbound between ZZZ and [an airspace fix] at 105. Traffic was called to both aircraft about 7 miles apart. The B737 had the traffic on the TCAS and I believe the VFR said; 'Roger.' The C172 said he was starting his VFR descent. Tower called yelling and arguing pointout approved. During the call; I heard the B737 say that he was responding to a RA. Later the C172 apologized for losing sight or slow descent; I am not sure which. I should have never answered the line. I should have continued the traffic calls or stopped the B737.
Enroute Controller described a NMAC event between an IFR air carrier arrival and a VFR overflight; the reporter acknowledging he/she should have issued traffic in lieu of answering the landline.