Mitel Open SIP Phones
Mitel's Open SIP phone portfolio extends the 6800 and 6900 series to work with any third-party SIP PBX or hosted UCaaS platform (including Cisco, Avaya, 3CX, FreePBX, and major cloud providers) without requiring a Mitel call server. These phones deliver the same enterprise grade HD audio, Gigabit PoE, and Mitel Hi-Q wideband audio quality as the full Mitel range, but are factory-unlocked for open SIP provisioning, making them the right choice for mixed or non-Mitel environments.
Open SIP (RFC3261) provisioning compatible
with Cisco, Avaya, 3CX, FreePBX, RingCentral, and other UCaaS platforms
Same Mitel Hi-Q HD wideband audio quality as full Mitel platform phones,
across all form factors
Auto-provisioning via DHCP Option 66, TR-069, and per-phone provisioning URLs
for zero touch deployment
Dual Gigabit Ethernet PoE, built in Bluetooth and Wi-Fi (select models), and USB expansion ports
Compatible
with standard SIP headsets, DECT adapters, and expansion modules for a fully flexible endpoint estate
Mitel 6905 / 6910 / 6915
Entry-level Open SIP desk phones ranging from the basic 6905 (2 SIP lines) to the 6915 (color display, 12 keys), all factory-unlocked for any RFC3261 SIP platform.
Mitel 6920w / 6920wt Open SIP
Mobile-first open SIP phone with Bluetooth 4.1, optional dual-band Wi-Fi, and BioCote antimicrobial variant (wt), compatible with Cisco, Avaya, 3CX, RingCentral, and all RFC3261 platforms.
Mitel 6930w / 6930wt Open SIP
Mid-range open SIP phone with 12 programmable keys, color display, Bluetooth 4.1 MobileLink, optional Wi-Fi, and PCLink PC audio bridge, fully unlocked for any SIP PBX or UCaaS.
Mitel 6940w Open SIP
Executive open SIP phone with 24 programmable keys, color display, Gigabit PoE, Wi-Fi, Bluetooth, and PCLink audio bridge, delivering the same Hi-Q HD audio quality as the full Mitel platform range.
Mitel 6970 Open SIP Conference
7" HD touchscreen conference unit with 360° beam-forming microphones, Hi-Q audio, Wi-Fi, Bluetooth 4.1, HDMI output, and full Open SIP compatibility for any third-party PBX or UCaaS platform.
Mitel Open SIP phones are factory-unlocked versions of the 6800 and 6900 series pre-configured for use with any RFC3261-compliant SIP PBX or UCaaS platform, not just Mitel systems. They deliver identical hardware quality, Hi-Q HD wideband audio, and the same physical form factors as the full Mitel platform range, but without requiring a Mitel call server for provisioning or operation.
Mitel Open SIP phones are compatible with any RFC3261-compliant SIP platform including Cisco Unified Communications Manager, Avaya Communication Manager, 3CX, FreePBX, Asterisk, RingCentral, 8x8, Zoom Phone, and any other SIP-based PBX or UCaaS service. The open SIP implementation uses industry-standard provisioning methods ensuring broad interoperability without requiring platform-specific customization.
Mitel Open SIP phones support zero touch provisioning through three standard methods. DHCP Option 66 allows the network to automatically direct phones to a provisioning server when they boot. TR-069 provides centralized remote management through an ACS server. Per-phone HTTP/HTTPS provisioning URLs allow configuration to be pushed from any standards-compliant provisioning system, enabling large deployments without individual manual configuration.
Yes. Select models in the 6900 Open SIP series include built in Bluetooth 4.1 and optional dual-band Wi-Fi. Bluetooth supports wireless headset pairing and the MobileLink feature for bridging smartphone audio through the desk phone speaker. Wi-Fi allows the phone to connect to the corporate network wirelessly when Ethernet cabling is impractical, such as in retrofit office fitouts or historic buildings.
Yes. Mitel Open SIP phones are specifically designed for environments running non-Mitel PBX systems or mixed-vendor telephony estates. They can be deployed alongside your existing phone inventory as a quality upgrade, used as a primary endpoint fleet on a Cisco, Avaya, or 3CX system, or deployed in a hybrid environment where different floors or departments use different PBX platforms.
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