Avaya J139 IP Telephone is a professional device providing crystal-clear audio, user-friendly interface and dependable network connectivity, ideal for offices, call centers and corporate environments.
| Feature | Details |
|---|---|
| Display | 2.8″ color display, 320 × 240 pixels jbrtelecom.com+2Avaya Documentation+2 |
| Line / Feature Buttons | 4 dual-color (red/green) LED line/feature buttons around display jbrtelecom.com+2mitaccomm.com.tw+2 |
| Soft Keys | 4 context-sensitive soft keys jbrtelecom.com+1 |
| Call Log / Directory | Up to 100 entries in recent calls; up to 250 contacts (Aura) jbrtelecom.com+1 |
| Audio / Codec | HD audio (wideband), supports G.711, G.726, G.729A/B, G.722, optionally Opus (with Aura) jbrtelecom.com+1 |
| Ethernet / Ports | Gigabit Ethernet (10/100/1000) with a second port (PC pass-through) jbrtelecom.com+2mitaccomm.com.tw+2 |
| PoE / Power | PoE Class 1 support, “sleep mode” for reduced energy use mitaccomm.com.tw+2jbrtelecom.com+2 |
| Encryption / Security | Supports TLS / SRTP for secure signaling & media jbrtelecom.com+1 |
| Mounting / Stand | Dual-position stand; optional wall-mount stand mitaccomm.com.tw+1 |
| Compatibility / Platforms | Works with Avaya Aura (6.3 FP4 etc.) and Avaya IP Office (11.0) jbrtelecom.com+1 |
| Other Features | Volume boost on handset (for hearing assistance) jbrtelecom.com+1 |









