BLD-02 · Building technology
IP telephony and PBX systems
A phone system still carries the calls that matter most: guests, patients, lift emergency lines and the reception desk. We design it with those calls in mind.
What a modern system includes
An IP PBX (on-premises or hosted) handles extensions, call routing, voicemail, call recording where lawful and required, and reports. External calls come through SIP trunks from a licensed local carrier, with analog or ISDN lines retained where a site still needs them.
Some lines must keep working when the data network fails: lift emergency phones, alarm communicators, and certain emergency lines. We identify those during design and give them a path that does not depend on a single switch or power supply.
Hotels and hospitals
Hotel systems integrate with the property management system for check-in and check-out, room status, wake-up calls and call charging. Hospitals need fast internal paging, DECT or Wi-Fi handsets for staff on the move, and integration with nurse call so a patient call reaches the right person. We define each integration and test it with the system owner before go-live.
Our part, start to finish
What we do on a telephony project
We don't sell the equipment. We design the system, install and commission it, and keep it working.
Design & consulting
- Extension, trunk and routing plan
- Survivability for critical lines
- Integration design (PMS, nurse call)
- Network QoS requirements
Installation
- PBX, gateway and handset installation
- Programming of call flows and IVR
- Number porting coordination with the carrier
- User training
Maintenance
- Moves, adds and changes
- Backup and software updates
- Trunk and quality monitoring
- Fault response
Before you buy
Questions to settle first
These decide cost and performance more than the brand on the box. We work through them with you at survey stage.
- Which lines must work when the network is down?
- Hosted or on-premises, and why?
- Do you need call recording, and on what legal basis?
- Which systems must the PBX talk to?
- How many staff need mobile handsets?
- Who handles moves and changes after handover?
Gallery
Telephony in context
Illustrations show typical arrangements, not specific projects. Select an image to enlarge it.