Which of the following statements are CORRECT about signaling functions of registers? (Multiple Choice)

Question

Options

• AManage call setup and release
• BTransmit numbers
• CPriority-based congestion notification
• DCharging

• A
  21% (8)
• B
  79% (30)

Explanation

In MFC-R2 and similar telephony signaling, the signaling system is split into two layers: line signaling and register signaling. Register signaling specifically handles the exchange of operational data between exchanges during call processing - this includes transmitting dialed digits/numbers (B), conveying priority or congestion status (C), and passing charging category information (D).

Option A is the distractor: managing call setup and release is a function of line signaling, not register signaling. Line signals handle seizure, answer, clear-back, and clear-forward events - the lifecycle of the call itself. Confusing the two layers is the most common error on this topic.

Memory tip: Think of registers as the "data clerks" - they handle Numbers, Priority, and Charging (NPC). The "line" (line signaling) is the "manager" who opens and closes the call. If a choice sounds like opening/closing a connection, it belongs to line signaling, not registers.

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