 However, there is no phone call from Shamrock's phone to Stringer to arrange the meeting.Freamon and McNulty later explain to ASA Rhonda Pearlman that Stringer has isolated himself from the rest of the phone network by only talking to Shamrock and providing Shamrock with a separate phone for their communications.Freamon suggests that they can have everyone in the Barksdale organization from Shamrock down on a conspiracy charge with a week of monitoring these wiretaps, but to collect evidence against Bell and Barksdale they need to pluck cellphone numbers out of the air.