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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.
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| Specification | Snom D735 14 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-09 | Avaya J179 8 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-29 |
|---|---|---|
| Calling | ||
| SIP accounts / linesDifference | 12EvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; SIP accounts / line support Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | Unknown |
| Programmable keysDifference | 32EvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Function keys Review note: Assignable SmartLabel positions across pages, rather than the number of physical keys. Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | Unknown |
| Local conference participantsDifference | Unknown | Unknown |
| Display | ||
| Display sizeDifference | 2.8 inEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Display / LCD Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 3.5 inEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 |
| Display resolutionDifference | 320 × 240EvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Display / LCD Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 320 x 240EvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 |
| Colour display | YesEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Display / LCD Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 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 Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Network interfaces Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 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 Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Power supply / Power over Ethernet Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, PoE row Evidence reviewed: 2026-09-29 |
| Wi-FiDifference | Optional adapterEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Wi-Fi / wireless connectivity Review note: Requires the optional Snom A210 USB Wi-Fi adapter. Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 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 | Optional adapterEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Bluetooth / accessories Review note: Bluetooth headset use requires an optional USB Bluetooth adapter; verify exact dongle and headset support. Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 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 | 1EvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; USB interfaces Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | Unknown |
| Accessories | ||
| Headset interfacesDifference | Unknown | Unknown |
| Expansion modulesDifference | Unknown | Unknown |
| Physical | ||
| Wall mountableDifference | YesEvidenceManufacturer specification Snom D735 datasheetSection: PDF page 2: Placement:Indoor, desktop, wall mounting Review note: Wall mounting may require a separately available wall mount kit; check this model's datasheet. Evidence reviewed: 2026-09-13 | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Wall mountable row Evidence reviewed: 2026-09-29 |
| Audio | ||
| HD voiceDifference | Unknown | Unknown |
| Full-duplex speakerphoneDifference | YesEvidenceManufacturer specification Snom D735 datasheetSection: PDF page 3: Speakerphone mode:Full duplex, HD audio , Evidence reviewed: 2026-09-13 | Unknown |
| Audio codecsDifference | Unknown | Unknown |
| Software | ||
| Operating systemDifference | Unknown | Unknown |
| Security | ||
| TLS signallingDifference | YesEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Security / encryption Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | Unknown |
| SRTP media encryptionDifference | YesEvidenceManufacturer specification Snom D735 datasheetSection: Downloads: English datasheet v3.pdf; technical specifications; Security / encryption Evidence reviewed: 2026-09-09 Applies to: Snom D735, as documented in the reviewed source. Regional availability, provider certification and exact headset combinations are unverified. | 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.