Resources / Guide
Practical guide · Seneca
SIM cards for CCTV: data use, cost and fixed-IP access
A remote camera is useful only when the right people can reach its footage and alerts. The right SIM and access configuration connect CCTV where fixed broadband is difficult, with data costs matched to the way the system records and is viewed.
First decide where the video goes
A camera recording to a local NVR may use mobile data only for viewing, alerts and selected uploads. A camera continuously sending its main stream to a remote recorder uses that connection throughout the recording period. These are very different allowances even when the cameras have the same resolution.
List the camera streams, recording schedules, remote viewers and update requirements. Include the router, recorder and management traffic. Measure representative use at the intended settings before choosing a plan, then allow for busier scenes and maintenance activity.
Estimate data from bitrate and time
For a stream crossing the mobile connection, an approximate decimal-GB calculation is: Mbps × hours transmitted × 0.45. For example, an average 2 Mbps stream sent continuously for 30 days is about 648 GB before additional traffic. The same average stream viewed remotely for one hour per day is about 27 GB over 30 days.
These are worked examples, not standard consumption figures for every camera. Multiply by the number of transmitted streams and account for other traffic. Scene activity, compression and bitrate controls affect the result; Axis’s bitrate guidance explains why video bandwidth and storage estimates need to reflect the actual workload.
Fixed public IP, private addressing and VPN access
A fixed public address, an address reachable through a private network and a secure remote-access service solve different access requirements. Establish how the chosen recorder or camera platform expects viewers to connect before buying an addressing feature.
Carrier-grade NAT generally prevents unsolicited inbound connections through an ordinary shared public address, but outbound connections can support compatible remote-access services. Ask the camera supplier which access method is supported. Axis recommends secure remote access or a VPN for its relevant remote-connection scenarios; avoid treating public exposure of a camera’s administration interface as the default design.
A practical remote-site example
A site with four cameras and a local recorder could retain footage locally while using mobile data for alerts and occasional review. Test the agreed viewing quality and number of simultaneous viewers, then measure the data used during a representative operating period.
Test loss and restoration of the mobile connection too: confirm local recording behaviour, queued uploads and how the responsible person sees a fault. This separates the camera’s recording requirement from the SIM’s communication role and gives a useful basis for the allowance and support plan.
Choose coverage and commercial terms together
Test the intended network, router and antenna at the actual site. Multi-network service can provide access to more than one available network under its terms, but switching behaviour and coverage must be verified. It does not guarantee continuous service or simultaneous use of every operator.
Compare the allowance, contract period, remote-access configuration, roaming, excess-use charges and support. For a shared fleet, add per-SIM charges to the pooled-data charge and confirm what happens when the allowance is reached. Security also needs device updates, access controls and a maintained network design; a SIM’s marketing label is not a complete security assessment.
Which Seneca buying route fits?
For an individual allowance, review the individual SIM options. For several devices sharing data, assess Managed SIMs with a Pooled Data Bundle. Confirm the service configuration and billing terms for the intended deployment before activation.
Talk through your CCTV connection. We help assess the cameras, site and way the footage is used, then explain the service and ongoing costs.