Communication Devices and Access Control
What this domain tests
Radio and telephone discipline, and the practical rules that make an access-control point effective.
Radio and device discipline
- Use your allotted call sign, listen before speaking, press the push-to-talk key, hold the set about 5 cm from the mouth.
- Keep messages short and factual: who, what, where, when, action required.
- Standard words: "Over" (I have finished, your reply), "Roger" (received and understood), "Say again", "Standby", "Out".
- Never transmit passwords, safe combinations, cash-movement timings or personal data on an open channel; use the landline or a code word.
- Report a faulty set immediately; a guard out of radio contact is a guard out of control.
Access-control rules
One controlled entry point wherever possible; challenge every unknown person politely; verify identity card, purpose and host approval; issue a visitor badge; escort visitors in restricted zones; log entry and exit times; every material movement needs a gate pass; keys are signed in and out; no tailgating and no propping doors open.
Worked example
A delivery person arrives at the service gate with three cartons during lunch hour and asks to "just drop them inside". The guard checks the delivery challan, calls the stores clerk on the intercom, logs name, firm, vehicle number and time, issues a temporary badge, and lets him in only after the clerk confirms and arrives to escort him. Reasoning: urgency is the most common social-engineering tool; verification through an independent channel defeats it.
Traps that cost marks
- Letting a known employee's friend in "because he is known to staff" - over-familiarity.
- Holding a door open for a group, allowing tailgating.
- Sharing door codes or biometric access with colleagues.
- Long, emotional radio messages that block the channel.