The Avaya IP Phone J139 is a professional SIP-based desk phone engineered to provide dependable communication for everyday business users. Designed for employees, administrative staff, customer service representatives, and office professionals, it delivers exceptional voice clarity and easy access to essential telephony features. Equipped with a clear display, programmable feature keys, Gigabit network connectivity, and headset support, the J139 helps organizations improve communication efficiency while maintaining enterprise-grade reliability. Its simple deployment and compatibility with Avaya communication platforms make it an ideal solution for modern workplaces.
Key Features
- SIP-based business desk phone
- High-definition voice quality
- Backlit display screen
- Multiple programmable feature keys
- Full-duplex speakerphone
- Integrated headset support
- Dual Gigabit Ethernet ports
- Power over Ethernet (PoE) support
- Easy-to-use interface
- Enterprise-grade reliability
Technical Specifications
| Specification | Details |
|---|---|
| Model | Avaya J139 |
| Product Type | SIP IP Desk Phone |
| Protocol | SIP |
| Display | Backlit LCD Display |
| Audio Quality | HD Voice |
| Speakerphone | Full-Duplex Speakerphone |
| Connectivity | Dual Gigabit Ethernet Ports |
| Headset Support | Yes |
| Power | PoE (Power over Ethernet) |
| Compatibility | Avaya IP Office, Avaya Aura & SIP Platforms |
Product Benefits
The Avaya J139 provides businesses with a cost-effective communication solution that delivers professional audio quality, simple usability, and reliable day-to-day performance. Its modern SIP architecture makes it suitable for organizations transitioning to IP-based communications.





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