What does one hour of PBX downtime cost your business?
Your phone system is your company’s lifeline: every customer call, every internal call between departments and branches, and your entire contact center depend on it. When the PBX fails, the damage goes far beyond a few missed calls. Deals are not closed, customers who cannot get through call a competitor instead, customer service grinds to a halt and your brand reputation suffers. Most of these failures show warning signs in advance and can be prevented with proper maintenance.
Trends Vietnam provides professional PBX maintenance services for Avaya, Alcatel-Lucent, Cisco and NEC systems. We do not wait for your phone system to go down; we proactively check it, identify risks and fix them before they affect your business.
Need advice now? Call Hotline: +84 933 802 388
Why regular PBX maintenance is an investment, not a cost
Many businesses only think about their PBX when it breaks. That is always the more expensive option: emergency repairs, downtime and lost business usually cost many times more than planned maintenance. Trends Vietnam’s maintenance service helps you:
- Minimise downtime: detect failing trunk or extension cards, weak power supplies, faulty fans, nearly full memory or storage and unstable trunks early, and fix them before they cause an outage.
- Never miss a customer call: verify call routing, hunt groups, auto attendants and voicemail so every inbound call reaches the right person at the right time.
- Prevent toll fraud: an IP PBX with weak configuration or default passwords can be exploited to make unauthorised international calls, generating huge phone bills overnight. Regular security reviews are the most effective defence.
- Always have a configuration backup: when hardware fails or a configuration is changed by mistake, the system is restored quickly instead of being reprogrammed from scratch over hours or even days.
- Stay current on firmware and security patches: keep the system on stable releases and close vulnerabilities according to vendor advisories.
- Ensure voice quality: resolve noise, one-way audio, dropped calls, latency and jitter on the IP network and SIP trunks.
- Extend equipment life: cleaning and control of temperature, power and UPS keep your PBX running reliably and protect your investment.
PBX systems we maintain
Many organisations run systems from several vendors acquired over different investment cycles. With Trends Vietnam you have a single point of contact for your entire voice infrastructure.
Avaya PBX maintenance
Avaya IP Office (IP500 V2, Server Edition), Avaya Aura / Communication Manager and Avaya IP and digital phones. We check and optimise voicemail, auto attendant, SIP trunks, call recording and contact center features.
Alcatel-Lucent PBX maintenance
Alcatel-Lucent OXO Connect, OmniPCX Office and OmniPCX Enterprise. We check trunks, extensions, hunt groups, auto attendants, SIP integration and inter-site links.
Cisco PBX maintenance
Cisco Unified Communications Manager (CUCM), Cisco Unified Communications Manager Express (CME), Cisco Unity Connection and voice gateways. We review dial plans, cluster health, certificates, licences and Cisco IP phones.
NEC PBX maintenance
NEC SV9100, SV8100, SL2100, SL1000 and hybrid IP/analogue systems. We check trunk and extension cards, configuration and feature programming against your actual usage.
What every maintenance visit covers
1. Hardware checks
- Power, fans, temperature and alarm LEDs on the PBX cabinet.
- Condition of trunk cards, extension cards and expansion modules.
- Cleaning of the PBX cabinet and rack; checks of connectors, patch cords and earthing.
- UPS and backup power for the PBX.
2. Software and configuration checks
- Analysis of system logs, alarms and fault history.
- Firmware/software version review with upgrade recommendations when needed.
- Licence status and voicemail/recording storage capacity.
- Full configuration backup, stored securely.
3. Trunk and call quality checks
- Inbound and outbound test calls on every trunk: analogue, ISDN/E1 and SIP.
- Voice quality, latency and jitter measurements on the IP network.
- Checks of extensions, IP phones, operator consoles and hunt groups.
4. Security review
- Review of administrator and extension passwords; removal of default passwords.
- Restriction of international dialling and blocking of unusual call routes.
- Review of remote access, service ports and related firewall policies.
5. Post-maintenance report
- A detailed maintenance record showing the status of every item checked.
- A list of identified risks with remediation or upgrade recommendations.
With a report after every visit, management and IT always know the health of the phone system and can plan investments with confidence.
PBX maintenance service packages
- Preventive maintenance: monthly, quarterly or every six months depending on system size and criticality.
- Remote technical support: add or change extensions, update greetings, adjust routing and troubleshoot quickly over a remote connection.
- Onsite incident response: an engineer on site within the response time committed in your SLA.
- All-inclusive package: preventive maintenance, remote support and onsite incident response combined, with top response priority.
Note: the service does not include spare parts, new licences or hardware upgrades unless separately quoted.
Why choose Trends Vietnam for PBX maintenance?
- Multi-vendor, one contact: Avaya, Alcatel-Lucent, Cisco and NEC handled by one engineering team, so you do not have to juggle several suppliers.
- Proactive prevention: we find and fix risks before they become outages.
- Clear SLA commitments: fast remote support and onsite engineers within the committed response time.
- Transparency: a written record and report after every maintenance visit.
- Security first: regular reviews to prevent toll fraud and unauthorised access.
- Infrastructure expertise: Trends Vietnam also delivers networks, structured cabling and server rooms, so we can resolve voice issues that originate in the underlying network.
PBX maintenance FAQ
How often should a PBX be maintained?
For small and medium businesses, every 3–6 months is appropriate. Large, multi-site systems and contact centers should be maintained monthly or quarterly.
Will maintenance interrupt our calls?
Most checks have no impact on operations. Tasks that require a restart or software upgrade are scheduled outside business hours.
Can you maintain a PBX that is out of vendor warranty?
Yes. Trends Vietnam supports older systems as well and can advise on a suitable upgrade path when needed.
Our PBX is making unusual international calls. What should we do?
Call our hotline +84 933 802 388 immediately so we can investigate and block the suspicious routes. This is usually a sign that the PBX is being exploited through a configuration weakness or weak passwords.
How much does PBX maintenance cost?
Pricing depends on the PBX model, number of extensions, number of sites and maintenance frequency. Contact us for a site survey and a tailored quotation.
Don’t wait for your PBX to go down
Every minute your phone system is down is a minute your customers cannot reach you. Let Trends Vietnam take care of your PBX starting today: we will assess your current system and recommend the right maintenance package.
Hotline: +84 933 802 388 · Send us an enquiry