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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.
Differences keep your selected requirements and unknowns visible. Equal headline values can remain when their evidence notes differ.
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| Specification | Grandstream GXV3350 17 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-12 Selected requirements: 2 met · 0 not met · 0 unknown | AudioCodes C450HD 9 of 23 specifications recorded Lifecycle: Unknown Record reviewed: 2026-09-29 Selected requirements: 0 met · 0 not met · 2 unknown |
|---|---|---|
| Calling | ||
| SIP accounts / linesDifference | 16EvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — Lines/SIP Accounts Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Unknown |
| Programmable keysDifference | Unknown | 8EvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > up to 8 programmable on-screen keys Evidence reviewed: 2026-09-29 |
| Local conference participantsDifference | 6EvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — Conferencing Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Unknown |
| Display | ||
| Display size | 5 inEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — Display Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | 5 inEvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > 5-inch colour TFT screen Evidence reviewed: 2026-09-29 |
| Display resolution | 1280 x 720EvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — Display Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | 1280 x 720EvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > 1280 x 720 screen Evidence reviewed: 2026-09-29 |
| Colour display | YesEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — capacitive colour LCD Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | YesEvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > colour TFT screen Evidence reviewed: 2026-09-29 |
| Touchscreen | YesEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — capacitive touch screen Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | YesEvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > touch screen interface Evidence reviewed: 2026-09-29 |
| Connectivity | ||
| Ethernet | GigabitEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — dual-switched 10/100/1000Mbps ports Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | GigabitEvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > GbE support Evidence reviewed: 2026-09-29 |
| Power over Ethernet | YesEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — built-in PoE/PoE+ Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | YesEvidenceManufacturer specification C450HD IP PhoneSection: IP Phone Series Highlights > PoE or external supply Evidence reviewed: 2026-09-29 |
| Wi-FiDifferenceRequired: Built in | Meets requirementBuilt inEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — integrated dual-band Wi-Fi Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Needs verificationUnknown |
| Wi-Fi standardDifference | 802.11acEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — integrated dual-band Wi-Fi Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Unknown |
| BluetoothDifferenceRequired: Built in | Meets requirementBuilt inEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features and Specs — Bluetooth Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Needs verificationUnknown |
| Bluetooth versionDifference | 4.2EvidenceManufacturer specification Grandstream GXV3350 datasheetSection: PDF page 2: Bluetooth Yes, integrated Bluetooth 4.2 + EDR Evidence reviewed: 2026-09-12 | Unknown |
| USB portsDifference | Unknown | Unknown |
| Accessories | ||
| Headset interfacesDifference | EHS, RJ9EvidenceManufacturer specification Grandstream GXV3350 datasheetSection: PDF page 2: Auxiliary Ports RJ9 headset jack (allowing EHS with Plantronics headsets), extension module port, USB port, Review note: Port and EHS mode only; exact headset, cable, and call controls require separate compatibility evidence. Evidence reviewed: 2026-09-12 | USBEvidenceManufacturer specification C450HD IP PhoneSection: C450HD Features > USB headset support Evidence reviewed: 2026-09-29 |
| Expansion modulesDifference | Unknown | Unknown |
| Physical | ||
| Wall mountableDifference | Unknown | Unknown |
| Audio | ||
| HD voiceDifference | YesEvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — HD speakerphone Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Unknown |
| Full-duplex speakerphoneDifference | Unknown | YesEvidenceManufacturer specification C450HD IP PhoneSection: IP Phone Series Highlights > full duplex speakerphone Evidence reviewed: 2026-09-29 |
| Audio codecsDifference | Unknown | Unknown |
| Software | ||
| Operating systemDifference | Android 7.0EvidenceManufacturer specification Grandstream GXV3350 product pageSection: Features — Android operating system Evidence reviewed: 2026-09-12 Applies to: Grandstream GXV3350 product page; exact model feature/specification section. | Unknown |
| Security | ||
| TLS signallingDifference | YesEvidenceManufacturer specification Grandstream GXV3350 datasheetSection: PDF page 2: DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6, Evidence reviewed: 2026-09-12 | Unknown |
| SRTP media encryptionDifference | YesEvidenceManufacturer specification Grandstream GXV3350 datasheetSection: PDF page 2: DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6, Evidence reviewed: 2026-09-12 | 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.