Bank Branch Cabling: Two Networks, No Shortcuts
Quick answer / TL;DR: Short answer: keep transaction and security networks on separate switches and ideally separate cable paths, use PoE for cameras where supported, and conceal all cabling in conduit or trunking with tamper-resistant fixings. Protect runs from public areas, label by function rather than by port, and document routes for auditors.
Same rack unit, two densities: 48 ports doubles the terminations behind one panel.A bank branch runs transaction systems and security systems that must not share a failure mode. Cabling reflects that separation.
Concealment and tamper resistance are functional requirements, not aesthetics.
Network Separation
| System | Cable | Separation |
|---|
| Teller positions | Cat6 | Own switch |
| Cameras | Cat6 PoE | Own switch |
| ATMs | Cat6 | Vendor managed |
| Alarm | Separate | Own path |
The separation row is the point: sharing a switch means sharing a reboot window and an attack surface.
Physical Rules
- Conduit in public areas
- Tamper-resistant fixings
- Lockable cabinets
- Function labels, not port numbers
- Route documentation retained
Function labels survive staff changes; port numbers do not.
Real-World Applications
A four-teller branch uses separate switches for transactions and cameras, with conduit from each counter to a locked cabinet. A refurbishment reroutes public-area cabling first.
Standards and Verification
| Reference | Relevance |
|---|
| TIA-568.2-D | Cabling |
| IEEE 802.3af/at | PoE |
| IEC 62368-1 | Safety |
Institutional security standards are not provided in the knowledge base. Confirm with the bank's own policy.
References
- TIA-568.2-D, Balanced Twisted-Pair Cabling
- IEEE 802.3af and 802.3at
- IEC 62368-1, Safety of IT equipment
Practical Notes
Photograph cabinets with labels visible at handover. Audits ask for exactly that.
Related reading: adapter — blogs/news/adapter
Related reading: warehouse cabling — blogs/news/warehouse-cabling
Related reading: bulk cable — blogs/news/bulk-cable
Frequently Asked Questions
Can networks share a switch?
Not for security and transactions.
PoE for cameras?
Where supported.
Conduit needed?
In public areas.
How label?
By function.
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