Installation Guide
Tools Needed:
- Ethernet cable (CAT5e or higher)
- Power adapter (included)
- Handset and cord
- Mounting bracket (optional)
- Network switch/router
Step-by-Step Installation
- Unpack and Inspect: Remove all components from packaging and verify all parts are present.
- Connect to Network: Connect the Ethernet cable from your network switch/router to the LAN port on the phone.
- Power Connection: Connect the power adapter to the phone and plug into a power outlet.
- Handset Connection: Connect the handset cord to the handset port on the phone.
- Optional PC Connection: For pass-through networking, connect your computer to the PC port on the phone.
- Power On: Press the power button or wait for auto-start. The phone will boot up and attempt to obtain an IP address.
- Configuration: Access the web interface using the IP address displayed on the screen to configure SIP settings.
- Test Call: Make a test call to verify audio quality and connection stability.
Specifications
| Model Series | T54S / T53 Series |
| Type | IP Business Phone |
| Color | Black / White |
| Display | 4.3-inch 480x272 color LCD |
| Network Ports | Dual 10/100/1000 Mbps Ethernet |
| Audio Codecs | G.711, G.722, G.729, Opus |
| Power Options | Power adapter, PoE (802.3af) |
| SIP Accounts | Up to 16 lines |
| Bluetooth | Bluetooth 4.2 (optional) |
| Dimensions (HxWxD) | 220 x 210 x 65 mm |
| Weight | 1.2 kg |
| Operating Temperature | 0°C to 40°C |
Warranty Information
- Full Warranty: 2 years parts and labor
- Extended Support: 5 years firmware updates
- Additional Coverage: Optional premium support available
For warranty service, contact Yealink Customer Service at 1-800- YEALINK or visit Yealink.com
Key Features
HD Voice Quality
Wideband audio with Opus and G.722 codecs deliver crystal-clear voice quality for professional business communications.
Dual Gigabit Ports
Integrated dual Gigabit Ethernet ports with PoE support allow for network pass-through to your computer without additional cables.
Bluetooth Connectivity
Built-in Bluetooth 4.2 enables wireless headset connectivity and mobile phone integration for seamless communication.
Advanced Noise Shield
Yealink's proprietary noise cancellation technology eliminates background noise for clear conversations in any environment.
Open Platform
Compatible with major IP-PBX platforms including BroadWorks, Metaswitch, Asterisk, and 3CX for flexible deployment.
Intuitive Interface
4.3-inch color LCD with intuitive menu system and programmable keys for easy access to frequently used functions.
Programmable Keys Explained
Line Keys
Direct line access for multiple SIP accounts and call appearances
Speed Dial
One-touch dialing for frequently called numbers and contacts
BLF (Busy Lamp Field)
Visual status monitoring of colleagues' availability
Call Park
Park calls for retrieval from any phone in the system
Directory Access
Quick access to corporate and personal directories
Feature Keys
Customizable keys for call transfer, conference, and other features
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone won't power on | Power adapter issue, PoE not working | Check power connection, try different power source, verify PoE switch |
| No dial tone | Network issue, SIP configuration error | Check network connection, verify SIP account settings |
| Poor audio quality | Network congestion, codec mismatch | Check network bandwidth, verify codec configuration |
| Display not working | Power issue, hardware failure | Check power supply, restart phone, contact support |
| Can't register to server | Network firewall, incorrect credentials | Check firewall settings, verify username/password |
| One-way audio | NAT/firewall configuration | Configure SIP ALG, check router settings |
Error Codes
- No Service: Network connection issue - Check Ethernet cable and network settings
- Registration Failed: SIP registration error - Verify SIP credentials and server address
- DNS Error: Domain resolution failure - Check DNS settings
- DHCP Failed: IP address assignment issue - Check DHCP server or use static IP
- Audio Codec Mismatch: Incompatible codec settings - Adjust codec priority
- Memory Full: Storage capacity exceeded - Clear call logs or reset
Manual Downloads
Current Model Manuals
T54S
Advanced IP Phone with Bluetooth
T53
Mid-range IP Business Phone
T53W
Wireless DECT IP Phone
T54W
Executive IP Phone with Color Display
Popular Previous Models
T46S
Touch Screen IP Phone
T42S
Entry-level Business Phone
T29G
Gigabit IP Phone
T21P E2
Basic IP Phone