Maintenance & Annual Maintenance Contracts (AMC)
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PABX & IP Telephony · Home
Simple Intercom and Calling for Every Room
Connect rooms, the gate and the guard post with extensions and an intercom that keep working through power cuts.
- Room-to-room intercom
- Gate & guard extension
- Mobile app extensions
- Backup power support
Choose Your Solution
Architecture, buying guide, compatible products and the Package Builder all follow the solution you pick.
Analog PABX topology Analog / hybrid PABX with analog phones
- Analog Phones
- 2-Pair Telephone Cable
- MDF / Krone Frame
- Analog PABX
- PSTN Lines / GSM Gateway
- Operator Console
Analog PABX reuses existing telephone wiring and works without a data network. Plan a UPS so lines stay up in power cuts.
Best for Offices with existing phone wiring Lowest cost per extension Simple transfer and intercom
Equipment checklist
- Required Analog PABX, analog phones, telephone cable, MDF / Krone frame, PSTN or GSM lines
- Conditional Expansion cards, GSM gateway, door phone, UPS
- Optional Operator console, voicemail card, call logging
What to size
- Outside lines × extensions capacity
- Free expansion slots for growth
- Cable pairs on the MDF / Krone frame
Sizes follow your site survey. The recommended setup below is already matched to this solution.
Choose Your Devices for Home
Every option below is compatible with this solution and comes from different brands and models. Choose one per component.
A home needs room-to-room intercom, a gate and guard-post line and calls that keep working through power cuts. A small PBX on a UPS covers all of it without a monthly bill.
This is the analog solution: an analog PABX with analog phones on telephone wiring. It works without a data network and keeps the cost per extension lowest. It contains no IP phones or gateways.
Typical size: 6–12 extensions with 1–2 outside lines.
Your setup
0 devices, one of each. Estimated:
Quantities are set in the Package Builder after your site survey.
Buying Guide: Analog Solution
What to check at each step. Tap a step to open it; products are chosen above in “Choose Your Devices”.
Step 1: Extensions, lines & call needs
Planning step
Buying guide
Count users, departments, outside lines and peak calls.
Details
- Check before buying: Users per department, outside lines and busiest-hour calls
- Common mistake: Sizing by headcount only
How to choose
- List every desk, department and shared phone (the gate first) that needs an extension
- Count outside lines from your busiest hour, not total staff
- Note features you need: call transfer, ring groups, IVR menu, voicemail, recording
- Add 20–30% spare extensions for growth
Rule of thumb
A useful rule for a home: outside lines ≈ 1 for every 4–6 staff, then add spare extensions for growth.
Step 2: Analog PABX system
Analog PABX
Buying guide
Match outside lines × extensions, with room to expand.
Details
- Check before buying: Capacity (e.g. 8 lines × 24 extensions) and expansion cards
- Common mistake: A PABX with no free expansion slots
How to choose
- Capacity is written as lines × extensions, for example 8 × 24
- Check how far it expands with cards before you need a new system
- Look for caller ID, DISA, door-phone and auto-attendant support
- A hybrid PABX can add IP extensions later without replacing the system
Rule of thumb
For a home, choose a PABX with at least 25% free extension capacity after today's count.
Key specifications to compare
- Lines × extensions
- expansion cards
- caller ID
- DISA / auto attendant
Right product when
Lines and extensions fit today with free capacity and expansion slots.
Step 3: Analog phones
Analog Phones
Buying guide
Single-line phones for most desks, key phones for reception.
Details
- Check before buying: Phone type per desk and caller-ID support
- Common mistake: Phones that do not show caller ID
How to choose
- Single-line analog phones suit most desks and are the cheapest option
- Proprietary key phones give reception one-touch transfer and line lamps
- Choose caller-ID display models so staff see who is calling
- Cordless analog phones help staff who move around the floor
Rule of thumb
Use key phones at reception and single-line caller-ID phones on other desks.
Key specifications to compare
- Single-line / key phone
- caller ID
- speakerphone
Right product when
Each desk has the right phone type and reception has a key phone or console.
Step 4: PSTN & GSM lines
Gateways & Trunks
Buying guide
Connect landlines, and GSM lines through a gateway.
Details
- Check before buying: Number of landlines and mobile SIM lines
- Common mistake: Too few outside lines for busy hours
How to choose
- Each PSTN landline uses one CO port on the PABX
- A GSM (FCT) gateway turns a mobile SIM into a PABX line
- Mobile-to-mobile calls through GSM lines often cost less
- Keep one line as backup for emergencies
Rule of thumb
Plan outside lines for the busiest hour, and add a GSM gateway if most calls go to mobiles.
Key specifications to compare
- CO lines
- GSM / FCT ports
- SIM count
Right product when
Outside lines cover the busiest hour with a backup line.
Step 5: Telephone cabling & MDF
Cabling & MDF
Buying guide
2-pair cable to each desk, terminated on an MDF / Krone frame.
Details
- Check before buying: Cable route, pair count and MDF capacity
- Common mistake: Unlabelled cable runs
How to choose
- Run 2-pair telephone cable (or Cat6 for future IP) to each desk
- Terminate everything on an MDF / Krone frame for easy changes
- Label each pair with the extension number at both ends
- Test every line before connecting phones
Rule of thumb
Run Cat6 instead of telephone cable where you may move to IP later; it carries analog today and IP tomorrow.
Key specifications to compare
- 2-pair / Cat6
- MDF / Krone
- labels
Right product when
Every extension has a labelled, tested pair on the MDF.
Step 6: UPS & power backup
UPS & Power
Buying guide
Keep the PABX running in a power cut.
Details
- Check before buying: Load of the PABX and the runtime you need
- Common mistake: No backup power on the phone system
How to choose
- Add the watts of the PABX and any power supply it uses
- Choose UPS runtime at the real load, not the maximum rating
- Keep reception and emergency lines on backup power
- Test and replace batteries on schedule
Rule of thumb
Put the PABX on a UPS so reception can still take calls during load-shedding.
Key specifications to compare
- VA / watts
- runtime
- outlets
Right product when
Runtime covers the PABX for your typical outage.
Step 7: Installation & maintenance
Services
Buying guide
Plan programming, testing and a support plan.
Details
- Check before buying: Site survey, extension plan, programming and service plan
- Common mistake: No numbering plan or documentation
How to choose
- Start with a site survey and an extension numbering plan
- Program IVR, ring groups, trunks and permissions before go-live
- Test every extension, outside line and transfer
- Hand over a numbering list and admin passwords, and agree a support plan
Rule of thumb
Handover should include the extension list, IVR flow and a test of every outside line.
Key specifications to compare
- Survey
- programming
- testing
- SLA
Right product when
Scope covers survey, programming, testing and a clear support SLA.
Your installation package is calculated automatically
Open Package BuilderIP phone / extension setup ৳ 500 / extension · Equipment setup & commissioning ৳ 1,000 / device. Add products to the Package Builder and it prices the installation for you.
Compatible products · Services
View all Services
Step 8: Warranty & support
Planning step
Buying guide
Verify warranty, support and spare handsets.
Details
- Check before buying: Warranty period, support channel and spares
- Common mistake: Unclear replacement terms
How to choose
- Compare warranty length for the PBX and phones
- Confirm local support hours and remote programming help
- Keep one or two spare handsets for quick swaps
- Buy from an authorised source
Rule of thumb
Ask for warranty length, support hours and spare availability in writing.
Planning an intercom for your home?
Custom projects are quoted after consultation.