Your office phone system is one of the few tools everyone uses every day, yet it is often the last thing anyone thinks about until it stops working. An EPABX AMC (annual maintenance contract) is how most Indian businesses keep their PBX healthy: a fixed yearly agreement with a vendor for preventive checks, repairs and support. But AMCs vary a lot. Some cover only a phone call when things break; others include visits, firmware updates, backups and spares. This guide explains what a good PBX maintenance contract should cover, gives you a checklist, and lists the questions to ask before you sign.
What is an EPABX AMC?
An AMC is a yearly service contract between your organisation and a PBX vendor or service partner. In return for a fixed fee, the vendor agrees to keep the system running to an agreed standard. Two common types:
- Comprehensive AMC: labour and covered spare parts are included.
- Non-comprehensive (labour only) AMC: visits and labour are included, parts are charged separately.
Whichever type you choose, the value is in the details: what is checked, how fast someone responds, and what happens when a part fails.
What a good PBX maintenance contract should cover
Preventive maintenance visits
Planned visits, often quarterly, to check the system before something fails: cabling, power, earthing, the cabinet or server, trunk lines, gateways and a sample of phones. A short written report after each visit is a good habit to insist on.
Software and firmware updates
Modern IP PBX systems and IP phones receive updates for security fixes and new features. The AMC should say who applies them, how often, and how they are tested first. Outdated firmware is one of the common routes for toll fraud and PBX hacking.
Configuration backups
The PBX configuration (extensions, IVR, routes, trunks, recordings settings) takes days to rebuild by hand. The vendor should confirm that scheduled backups run, are stored off the PBX, and can actually be restored. See our guide on PBX backup and failover for what to back up.
Fault response and resolution times
The contract should state, in hours, how fast the vendor responds and resolves faults, split by severity. A total outage needs a much faster response than one faulty handset.
Remote support
Many faults on an IP PBX can be fixed remotely, often within minutes, without waiting for a visit. Agree how remote access works and how it is secured (VPN, restricted IPs, named accounts).
Spares and replacements
Who keeps spares for critical parts such as gateway cards, power supplies and phones? For a comprehensive AMC, ask which parts are covered and whether a standby unit is provided while a part is repaired.
Moves, adds and changes
New staff, desk moves, new IVR messages and ring group changes happen every month. Some AMCs include a number of these changes; others charge per request.
Training and documentation
A short refresher for your receptionist or IT team once a year, and an up-to-date list of extensions, trunks and passwords handed over to you.
EPABX AMC checklist
| Item | What to look for in the contract |
|---|---|
| Preventive visits | Number per year, what is checked, written report |
| Response time | Hours to respond and to resolve, by severity |
| Support hours | Business hours only, or 24×7 for critical faults |
| Remote support | Included, with secure access method stated |
| Firmware and software updates | Who applies them, how often, tested first |
| Backups | Scheduled, stored off the PBX, restore tested |
| Spares | Covered parts listed, standby unit during repair |
| Moves, adds, changes | Number included or per-request charge |
| Trunk and carrier issues | Vendor coordinates with the telecom provider |
| Escalation | Named contacts and escalation levels |
| Exclusions | Damage from power surges, water, misuse listed clearly |
| Exit | Handover of configuration, passwords and documentation |
Questions to ask PBX vendors before signing
- Is this a comprehensive or labour-only AMC, and which parts are excluded?
- What are your response and resolution times for a full outage, a trunk failure and a single phone fault?
- Do you have engineers who can reach our sites, including branch offices?
- How do you apply firmware updates, and do you test them before rolling them out?
- How are backups taken, where are they stored, and when did you last test a restore?
- How is remote access secured, and who on your team can log in?
- Will you coordinate with our SIP trunk or PRI provider when a line is down, or do we have to?
- What happens at the end of the contract? Will we receive the full configuration and admin passwords?
How an IP PBX makes maintenance easier
An older analog EPABX usually needs an engineer on site with a programming handset. An IP PBX can be checked and changed from a browser, which shortens most support calls.
On Voxdial IP PBX, for example:
- The System Dashboard shows CPU, memory, uptime, disk storage and licence status at a glance, so a health check takes a minute.
- Backup and Restore runs scheduled backups to local disk, FTP, SFTP, Amazon S3, Dropbox or email, with an email alert on success or failure.
- Auto provisioning sets up IP phones and BitVoice VoIP gateways from the PBX, which makes replacing a faulty phone a quick job.
- Call reports and CDR help separate a real fault from a user problem, such as a busy line or a wrong number.
If you still run an older EPABX and spend more on repairs each year, it may be time to compare. Our guide to upgrading an old EPABX to IP PBX explains how to do it while keeping your existing analog phones.
Signs your current AMC is not working
- The same fault comes back after every visit.
- No one can tell you when the last backup was taken.
- Firmware has not been updated in years.
- You do not have the admin password to your own PBX.
- Response times are not written down anywhere.
Looking for maintenance support or a review of your current phone system? Talk to BitVoice.
FAQs
What is an EPABX AMC?
It is an annual maintenance contract in which a vendor maintains your PBX for a fixed yearly fee, covering preventive visits, fault repair and support to agreed response times.
What is the difference between a comprehensive and a non-comprehensive AMC?
A comprehensive AMC includes labour and covered spare parts. A non-comprehensive or labour-only AMC covers visits and labour, and parts are charged separately.
How often should a PBX be serviced?
Many businesses choose quarterly preventive visits, with remote checks and backups in between. Busy sites such as hospitals and call centres may need more frequent checks.
Should firmware updates be part of the AMC?
Yes. Security fixes for the PBX, gateways and IP phones should be applied regularly, after testing, and the contract should say who is responsible.
