Add a camera to an existing CCTV system in Durban

The first check is the recorder

A recorder has a fixed channel count. An eight-channel recorder cannot record a ninth camera simply because the cabinet has space for another cable. Network recorders can also have limits for incoming bandwidth, decoding, supported resolution and licensed channels.

We record the exact recorder model and check:

• how many channels are already occupied;
• which analogue, HD-over-coax or IP formats it accepts;
• the highest resolution and frame rate supported on the proposed channel;
• whether a compatible camera is still available;
• remaining network and PoE capacity where IP cameras are involved; and
• how the extra stream changes the available recording retention.

This often answers the feasibility question before a visit. A photograph of the recorder label and rear panel is far more useful than the brand name alone.

The new view still needs a purpose

Capacity only proves that another stream can be connected. It does not prove that the position will capture the required evidence.

We agree what changed at the property and what the additional camera must answer. A new pedestrian gate may need a face at close range. A delivery area may need the handover itself. A blind spot beside a driveway may need movement context while an existing camera already captures the number plate.

The proposed view is recorded with the existing cameras. On a larger or shared layout it goes onto the coverage drawing; on a smaller site the itemised proposal can record the position clearly. The review reveals whether one new position fills the gap or merely duplicates a view the system already has.

Compatibility is more than the plug

Older systems commonly contain a mix of generations. A coaxial camera may use a BNC connector, while the signal behind it can be CVBS, HDCVI, HDTVI or AHD. IP cameras can use ONVIF or a manufacturer protocol, but supported functions vary by recorder, camera and firmware.

A picture appearing on screen is only the first test. Recording, playback, time synchronisation, motion or analytics, night switching and export also have to work. We check those functions before treating the combination as compatible.

A mixed system can be a sensible upgrade path. Serviceable analogue cameras may stay while a new IP camera handles the added position. That approach works when the recorder, network and handover process support the two sections as one usable system.

The cable route decides much of the cost

The added camera may sit three metres from the recorder while the real cable route covers thirty. Finished ceilings, paved driveways, fire compartments, estate rules and safe ladder access all affect how the position can be reached.

Cost therefore depends on:

• the camera and detail required at the new view;
• the real cable route and the surface being crossed;
• whether power and network capacity already exist;
• any recorder, switch or storage change needed to create headroom;
• exterior housings, glands and corrosion exposure; and
• the work required to recommission the combined system.

The proposal separates the camera position from supporting equipment. If the recorder is full, you can see the cost of creating capacity rather than receiving one unexplained total.

What you receive

For an additional camera we provide:

• a compatibility and capacity check against the installed equipment;
• the purpose and proposed view recorded in the proposal, and on a coverage drawing where the site needs one;
• the cable and power route;
• an itemised proposal showing any supporting upgrade separately;
• commissioning of live view, recording, playback and export; and
• updated camera names and app access at handover.

If the existing system has reached the point where one added camera triggers a disproportionate replacement, we explain the available staged routes. The useful answer may be to create headroom now, reserve capacity for later positions, or postpone the addition until the wider upgrade makes sense.

To start, send the recorder model, a photograph of its rear connections and a photograph showing the view you want to add.