1. Introduction
This user manual provides comprehensive instructions for the installation, operation, and maintenance of your Beetel M78 Corded Feature Phone. Please read this manual thoroughly before using the device to ensure proper functionality and to familiarize yourself with all features. Keep this manual for future reference.
2. Package Contents
Upon unpacking your Beetel M78 Corded Feature Phone, please verify that all the following items are included:
- 1 Unit of Beetel M78 Twin Caller ID Phone
- 1 Power Adaptor
- 1 Line Cord
- 1 User Manual (this document)
- 2 Base Units
- 2 Handsets
- 2 Coil Cords
- 1 Rosette Box
- 1 Six Core Data Cord

Image Description: A close-up of the Beetel M78 phone packaging, displaying a list of included components such as the phone unit, power adapter, line cord, and user manual, along with manufacturer and customer care details.
3. Product Overview
The Beetel M78 is a corded feature phone designed for reliable communication. It includes advanced functionalities such as intercom between two phones, call transfer, and a two-way speakerphone, making it suitable for various environments.

Image Description: A front view of the Beetel M78 Corded Feature Phone, showcasing its black design, keypad, and LCD display. The handset is connected to the base unit via a coiled cord.
Key Features:
- Intercom facility between two phones
- Phone transfer facility from phone 1 to phone 2 and vice versa
- Dual mode FSK/DTMF Caller Line Identification (CLI) compatible
- Two-way speakerphone for hands-free communication
- 3 one-touch memory buttons (M, M2, and M3)
- Auto add '0' in phone back
- 28 incoming phone memory

Image Description: The back of the Beetel M78 phone packaging, detailing key features such as intercom, call transfer, caller ID with 16-digit LCD, two-way speakerphones, and one-touch memory.
4. Setup
Follow these steps to set up your Beetel M78 Corded Feature Phone:
- Connect the Handset: Plug one end of the coiled cord into the handset and the other end into the designated handset jack on the phone base unit.
- Connect the Phone Line: Plug one end of the line cord into the LINE jack on the phone base unit and the other end into your telephone wall jack.
- Connect the Power Adapter: Insert the small plug of the power adapter into the DC IN jack on the phone base unit. Plug the other end of the power adapter into a standard electrical outlet.
- Initial Check: Lift the handset. You should hear a dial tone. If not, recheck all connections.
5. Operating Instructions
5.1. Basic Call Functions
- Making a Call: Lift the handset or press the SPEAKER button, then dial the desired number.
- Receiving a Call: When the phone rings, lift the handset or press the SPEAKER button to answer.
- Ending a Call: Place the handset back on the cradle or press the SPEAKER button again if using hands-free.
5.2. Intercom Facility
The M78 supports intercom communication between two connected phone units. This is ideal for internal communication within offices or large homes.
- To initiate an intercom call, refer to the specific intercom button or dialing sequence outlined in the quick start guide included with your product.
5.3. Call Transfer
You can transfer an active call from one M78 phone unit to another connected M78 unit.
- During an active call, follow the specific call transfer procedure detailed in your quick start guide. This typically involves pressing a transfer button and dialing the extension of the other phone.
5.4. Two-Way Speakerphone
The two-way speakerphone allows for hands-free conversations.
- Press the SPEAKER button to activate the speakerphone during a call or to make a call without lifting the handset.
- Press the SPEAKER button again to end the call or switch back to the handset.
5.5. One-Touch Memory (M, M2, M3)
Store frequently dialed numbers for quick access.
- To Program: Refer to your quick start guide for the exact steps to store numbers under the M, M2, and M3 buttons. This usually involves entering the number, pressing a memory button, and then pressing the desired one-touch memory key.
- To Use: Lift the handset or press SPEAKER, then press the desired one-touch memory button (M, M2, or M3) to dial the stored number.
5.6. Caller Line Identification (CLI)
The phone is compatible with FSK/DTMF dual-mode CLI, displaying the caller's number (if available and subscribed to the service).
- Incoming call details are displayed on the LCD screen.
- The phone stores up to 28 incoming call records. Use the navigation buttons to scroll through the call history.
5.7. Auto Add '0' in Phone Back
This feature automatically adds a '0' prefix when redialing certain numbers from the call log, which can be useful for specific dialing requirements.
6. Maintenance
To ensure the longevity and optimal performance of your Beetel M78 phone, follow these maintenance guidelines:
- Cleaning: Wipe the phone's surface with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Environment: Keep the phone away from direct sunlight, excessive heat, moisture, and dust.
- Handling: Avoid dropping the phone or subjecting it to strong impacts.
- Cords: Ensure all cords are not tangled or pinched, which can cause damage.
7. Troubleshooting
If you encounter issues with your Beetel M78 phone, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No dial tone | Phone line not connected properly or service issue. | Check the phone line connection to the wall jack and the phone base. Test with another phone if possible to rule out service issues. |
| No display on LCD | Power adapter not connected or power outage. | Ensure the power adapter is securely plugged into the phone and a working electrical outlet. Note that during a power outage, the display and certain features may not function as the phone does not have internal battery backup. |
| Caller ID not showing | Caller ID service not subscribed or not enabled. | Contact your telephone service provider to ensure Caller ID service is active on your line. |
| Cannot hear caller / Caller cannot hear me | Handset or speaker volume too low, or faulty cord. | Adjust the volume. Check the coiled cord connection to the handset and base. Replace the cord if necessary. |
| Memory dialing not working | Number not programmed correctly. | Re-program the one-touch memory buttons following the instructions in Section 5.5. |
Important Note: The Beetel M78 does not include internal battery backup. In the event of a power outage, features such as date, time, and stored call logs may reset to factory defaults.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Beetel |
| Model | M78 |
| Manufacturer | Beetel Teletech Limited |
| Telephone Type | Corded |
| Colour | Black |
| Display Type | LCD |
| Power Source | Corded Electric |
| Batteries Included | No |
| Batteries Required | No |
| Compatible Devices | Standard Telephone Networks |
| Item Weight | 2 kg 440 g |
| Package Dimensions | 25.8 x 24.6 x 12 cm |
| Answering System Type | Digital |
| Date First Available | 19 December 2012 |
9. Warranty and Support
9.1. Warranty Information
Your Beetel M78 Corded Feature Phone comes with a 12-month Beetel Warranty from the date of purchase. Please retain your purchase receipt as proof of warranty.
9.2. Customer Support
For any queries, technical assistance, or warranty claims, please contact Beetel Customer Care:
- Customer Care Cell: BRIGHTSTAR TELECOMMUNICATIONS INDIA LIMITED
- Toll Free Number: 1800-10-23456
- Email ID: customer.care@beetel.in