The Smarter Way to Move Beyond Copper
A drop-in replacement for any analog line… supplied, connected, monitored and supported by Southlight Services, for one monthly charge.
Why DIGI-POTS is superior over other POTS replacement solutions:
72-hour Battery Backup
Protection to outlast the outage
DIGI-POTS provides up to 72 hours of battery backup, keeping essential systems connected until power is restored.
Provides up to 72 hours of battery backup
Keeps critical systems connected in extended outages
Protects life safety communications when power is unavailable
Layers of Protection and Dual-SIM Failover
Designed for the unexpected
DIGI-POTS combines automatic LTE failover with dual SIM redundancy to provide three layers of protection.
Stays connected when your network doesn’t
Automatic LTE failover & dual SIM redundancy
Built for uninterrupted life safety communication
Legacy Device Compatibility
Modernize, don’t replace what still works
If your existing equipment is reliable and code compliant, replace your copper lines, not your devices.
Supports a wide range of legacy analog devices
Avoids unnecessary equipment replacement
Protects your investment while modernizing communications
Custom Firmware, Optimized for Devices
Engineered for reliable performance
DIGI-POTS is configured & optimized at the device level for reliable performance across a wide range of equipment.
Stays connected when your network doesn’t
Automatic LTE failover & dual SIM redundancy
Built for uninterrupted life safety communication
Fully Managed, One Partner
Simple support when it matters
Southlight Services provides a fully managed solution with one experienced team and a single point of contact every step of the way.
One partner from implementation through ongoing support
One point of contact for every question and problem
Simplified service so you can focus on your business
No Up-front Hardware Costs
Move forward with no initial expense
Replacing aging copper lines shouldn't require up-front investment. Hardware is included as part of your service.
No up-front costs
Predictable monthly pricing with no surprise equipment purchases
Modernize sooner without waiting for the next budget cycle
The Solution: One device. One monthly charge. Fully managed.
Digital POTS replacement, delivered as a complete managed service
We replace the copper line at the wall with a compact gateway that behaves exactly like the analog line your equipment expects with no rewiring, no equipment replacement, no reprogramming. Fire panels, alarm dialers, fax machines and modems keep working exactly as before, with Contact ID, T.38 fax and modem signalling fully supported. Behind it, voice runs as VoIP over our hosted cloud PBX, with a multi-network cellular data connection built in as automatic failover if connectivity ever drops.
And unlike a box-shift, everything is included in one predictable monthly charge:
• The device - enterprise-grade gateway, supplied and supported by us
• The telephone number - new or ported, with full call control via our hosted cloud PBX
• Connectivity - VoIP as the primary voice path, with multi-network cellular data failover included
• Minutes - calls bundled in, no surprise usage bills
• 24/7 monitoring and support - we watch every line, around the clock
Battery-backed. Failover-protected. Compliance-ready.
Built to support the standards your critical lines must meet, including EN 81-28 for lift emergency communication and EN 50136 for alarm transmission — and a proven replacement path for withdrawn services such as BT Redcare.
How it works
Survey & scope — your sites and lines are surveyed, and each analog service is mapped to a replacement configuration.
Install & port — the gateway is installed at the demarcation point; your existing number is ported or a new number provisioned. Equipment plugs in exactly as before.
Monitor & manage — every line is monitored 24/7 from our cloud platform, with proactive alerting, remote diagnostics and full support included.
What’s included
Built for the lines that matter most
Life safety & emergency:
Fire alarm panels
Lift emergency phones
Security and intruder panels
Medical alert and telecare
Nurse call and patient alarms
Emergency phones and intercoms
Access & building systems: Gate and door access · Education bell systems · PA and paging
Voice & data lines: Fax and franking · Legacy phone lines · Hospitality guest and courtesy phones
What Makes DIGI-POTS Different?
Four layers of resilience
A critical line should never have a single point of failure. Every line we deliver is protected by:
1. Primary connection — voice runs as VoIP over the site's wired connection to our hosted cloud PBX.
2. Automatic cellular failover — if the wired path drops, the gateway switches seamlessly to 4G data and calls carry on.
3. Dual-SIM redundancy — if one mobile network degrades, the device switches SIM to the strongest available signal.
4. Battery backup — an internal battery keeps the line alive through power cuts, with up to 24 hours of standby.
Works with what you already have
The gateway presents a standard analog line, so existing equipment connects without modification or reprogramming:
• Alarm and fire panels — full Contact ID signalling support
• Fax and franking — T.37 and T.38 fax supported
• Modem-based equipment — V.150.1 modem support for legacy dial-up devices
• Two lines per device — dual analog ports as standard, so paired lines (e.g. fire panel dual-path) run from a single unit
Why not just standard VoIP?
• Purpose-built for analog equipment — fire panels, lift phones and alarm dialers weren't designed for IP.
Our gateway presents the analog line they expect, while we handle the digital side.
• Failover as standard — four layers of resilience on every line, down to the battery.
• Preconfigured, plug-and-play — devices ship ready to install, so a line can be live the same day.
• Managed end to end — number, call control, connectivity, monitoring and support from one provider, not a patchwork of suppliers.
Compliance
Designed to support the requirements of regulated and life-safety applications, including EN 81-28 (lift emergency communication), EN 50136 (alarm transmission systems), and replacement of withdrawn signalling services such as BT Redcare.