ABC customer needs to have an External configure bridge for Mobile Agent agent greetings with...

B The required number of conference bridge resources for Mobile Agent agent greetings with an Average greeting time of 10 secs and a Mobile Agent call rate of 8 secs is 18. This can be calculated by dividing the average greeting time by the call rate and multiplying by two (for duplexed PGs). For example: (10 / 8) x 2 = 2.5 x 2 = 5 conference bridge resources per PG pair. Since there are four PG pairs in a PCCE deployment, the total number of conference bridge resources is 5 x 4 = 20. References = [Cisco Unified Contact Center Enterprise Solution Reference Network Design (SRND), Release 12.5(1)], page 97