Compare products
Compare desk phones
Plan your deployment
Find your next desk phone
Search, shortlist two to four phones, then compare specifications and source evidence.
Compare essentials or all specifications. Unknown values stay visible when showing differences.
How to read this comparison
SIP accounts are registrations, not simultaneous calls. Programmable keys count assignable positions across pages, not just physical buttons. Conference capacity and encryption depend on firmware and configuration.
No is an explicit negative; Unknown means unresolved evidence; Not applicable means the field does not apply. An optional adapter is an extra accessory. Open Evidence for model scope, source sections and qualifications.
Differences keep your selected requirements and unknowns visible. Equal headline values can remain when their evidence notes differ.
Your shortlist has changed. Use Compare selected to update this table before sharing or printing. Go to shortlist
All recorded values in this view are the same. Turn off Show differences only or choose All specifications to see more.
Swipe or scroll inside the table to see every product. Keyboard users can focus the table and use arrow keys.
| Specification | Fanvil X1SG 8 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-11 | Avaya J179 8 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-29 |
|---|---|---|
| Calling | ||
| SIP accounts / linesDifference | 2EvidenceManufacturer specification Fanvil X1SG datasheetSection: Generic / Highlights — SIP lines Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | Unknown |
| Programmable keysDifference | Unknown | Unknown |
| Local conference participantsDifference | 3EvidenceManufacturer specification Fanvil X1SG datasheetSection: Highlights / Call Features — local audio conference Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | Unknown |
| Display | ||
| Display sizeDifference | Unknown | 3.5 inEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 |
| Display resolutionDifference | 128 x 48EvidenceManufacturer specification Fanvil X1SG datasheetSection: Physical Specifications — main LCD Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | 320 x 240EvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 |
| Colour displayDifference | Unknown | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display type row Evidence reviewed: 2026-09-29 |
| TouchscreenDifference | Unknown | Unknown |
| Connectivity | ||
| Ethernet | GigabitEvidenceManufacturer specification Fanvil X1SG datasheetSection: Networking — physical Ethernet Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | GigabitEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Ethernet switch row: dual 10/100/1000 Evidence reviewed: 2026-09-29 |
| Power over Ethernet | YesEvidenceManufacturer specification Fanvil X1SG datasheetSection: Generic / model comparison / power supply Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, PoE row Evidence reviewed: 2026-09-29 |
| Wi-FiDifference | Unknown | Optional adapterEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Wi-Fi support row: optional module Evidence reviewed: 2026-09-29 |
| Wi-Fi standardDifference | Unknown | Unknown |
| BluetoothDifference | Unknown | Optional adapterEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Bluetooth support row: optional module Evidence reviewed: 2026-09-29 |
| Bluetooth versionDifference | Unknown | Unknown |
| USB portsDifference | Unknown | Unknown |
| Accessories | ||
| Headset interfacesDifference | Unknown | Unknown |
| Expansion modulesDifference | Unknown | Unknown |
| Physical | ||
| Wall mountableDifference | Unknown | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Wall mountable row Evidence reviewed: 2026-09-29 |
| Audio | ||
| HD voiceDifference | YesEvidenceManufacturer specification Fanvil X1SG datasheetSection: Audio / Highlights — HD voice Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | Unknown |
| Full-duplex speakerphoneDifference | Unknown | Unknown |
| Audio codecsDifference | Unknown | Unknown |
| Software | ||
| Operating systemDifference | Unknown | Unknown |
| Security | ||
| TLS signallingDifference | YesEvidenceManufacturer specification Fanvil X1SG datasheetSection: Protocols — SIP over TLS Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | Unknown |
| SRTP media encryptionDifference | YesEvidenceManufacturer specification Fanvil X1SG datasheetSection: Protocols — SRTP Evidence reviewed: 2026-09-11 Applies to: Fanvil X1SG; manufacturer datasheet linked from the reviewed product page. | Unknown |
Compatible phone systems
The indicator shows whether a compatible configuration path is documented, or whether the result still needs verification. A not-listed result does not mean technically incompatible. It does not replace checking the provider firmware branch, tenant, network and feature requirements.
3CX V20
Listed firmware applies to 3CX V20. Cloud or remote phones need a router phone or SBC. Recheck the current provider release before deployment.
Not reviewed
Not reviewed
Zoom Phone
Yealink phones require Zoom-specific firmware. A certification entry does not confirm every feature or regional deployment.
Not reviewed
Not reviewed
Microsoft Teams SIP Gateway
This is SIP Gateway compatibility, not native Teams-phone certification. Use the gateway provisioning path and approved firmware; confirm tenant licensing, policies and network requirements.
Not reviewed
Not reviewed
Specifications may vary by region, hardware revision, firmware, or optional accessory. A review date or recorded field is not a compatibility guarantee. Follow each product’s official sources before purchasing or deploying.
158 phones found
Unknown means not yet verified, not No.
Before choosing a phone
Treat this comparison as a research aid, not a compatibility or purchasing guarantee. Confirm regional variants, firmware support, platform certification, power requirements, accessories, lifecycle status, and current availability with the manufacturer and your phone-system provider.