Compare desk phones
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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.
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| Specification | Avaya J179 8 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-29 Selected requirements: 0 met · 2 not met · 0 unknown | Unify OpenScape CP600 7 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-29 Selected requirements: 1 met · 0 not met · 1 unknown |
|---|---|---|
| Calling | ||
| SIP accounts / linesDifference | Unknown | Unknown |
| Programmable keysDifference | Unknown | Unknown |
| Local conference participantsDifference | Unknown | Unknown |
| Display | ||
| Display sizeDifference | 3.5 inEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 | 4.3 inEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Screen row Evidence reviewed: 2026-09-29 |
| Display resolutionDifference | 320 x 240EvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display row; primary display Evidence reviewed: 2026-09-29 | 480 x 272EvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Screen row Evidence reviewed: 2026-09-29 |
| Colour display | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Display type row Evidence reviewed: 2026-09-29 | YesEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Screen row Evidence reviewed: 2026-09-29 |
| TouchscreenDifference | Unknown | Unknown |
| Connectivity | ||
| Ethernet | GigabitEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Ethernet switch row: dual 10/100/1000 Evidence reviewed: 2026-09-29 | GigabitEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Ethernet ports row Evidence reviewed: 2026-09-29 |
| Power over Ethernet | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, PoE row Evidence reviewed: 2026-09-29 | YesEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, IEEE 802.3af POE row Evidence reviewed: 2026-09-29 |
| Wi-FiDifferenceRequired: Built in | Does not meet requirementOptional adapterEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Wi-Fi support row: optional module Evidence reviewed: 2026-09-29 | Needs verificationUnknown |
| Wi-Fi standardDifference | Unknown | Unknown |
| BluetoothDifferenceRequired: Built in | Does not meet requirementOptional adapterEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Bluetooth support row: optional module Evidence reviewed: 2026-09-29 | Meets requirementBuilt inEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Bluetooth row 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 | YesEvidenceManufacturer specification Avaya J100 Series hardware specificationsSection: Table 2, J179 column, Wall mountable row Evidence reviewed: 2026-09-29 | Unknown |
| Audio | ||
| HD voiceDifference | Unknown | Unknown |
| Full-duplex speakerphoneDifference | Unknown | YesEvidenceManufacturer specification OpenScape CPx00 seriesSection: Features Comparison table, CP600 column, Speakerphone row Evidence reviewed: 2026-09-29 |
| Audio codecsDifference | Unknown | Unknown |
| Software | ||
| Operating systemDifference | Unknown | Unknown |
| Security | ||
| TLS signallingDifference | Unknown | Unknown |
| SRTP media encryptionDifference | Unknown | 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.
49 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.