A customer has a remote site with 100 agents, and the remote site only has SRST for E.911. 50% of the supervisors are located at HQ where the data center is. The agents to supervisor ratio is 10%. The

Question

Options

• A300 RTP streams
• B150 RTP streams
• C110 RTP streams
• D120 RTP streams

• A
  11% (6)
• B
  5% (3)
• C
  65% (36)
• D
  18% (10)

Explanation

Option C (110 streams) is correct because the calculation has two components: 100 agents each require 1 RTP stream for their active calls traversing the WAN to the data center, plus the supervisor count - at a 10% agent-to-supervisor ratio, there are 10 supervisors total, each requiring 1 additional RTP stream to silent monitor or record, giving 100 + 10 = 110 streams minimum. The 50% HQ split is a deliberate red herring - since any supervisor (HQ or remote) must be able to monitor remote agents, all 10 supervisor monitoring streams must be accounted for over the WAN link to the data center where the recording/monitoring infrastructure lives.

Why the distractors fail:

• A (300): Overcounts by treating each RTP stream as 3 (perhaps conflating TX, RX, and monitoring as separate streams per agent).
• B (150): Likely arrives here by applying the 50% HQ supervisor split incorrectly - e.g., only counting 50 agents or halving the total, ignoring that all 100 agent calls still need WAN bandwidth.
• D (120): Probably assumes 20 supervisors (perhaps misreading the 10% ratio as 20%) or double-counts each supervisor's monitoring stream: 100 + 20 = 120.

Memory tip: Use the mantra "Agents + Supervisors = Streams." Count all agents on calls (100), add all supervisors who can monitor (10% × 100 = 10), and ignore the HQ split - the remote site must support every supervisor's monitoring stream regardless of location.

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