Viking SIP Multicast Paging Horn with Talk Back - 300TB-IP

Viking Electronics 300TB-IP SIP Multicast Talk-Back Paging Horn

The Viking Electronics 300TB-IP is a commercial-grade SIP and multicast paging horn built for facilities that need both broadcast paging and two-way conversation capability from a single PoE endpoint. Rated IP66 and tested from -40°F to 140°F, this is a horn you can mount outdoors at a loading dock, parking structure, or industrial yard without worrying about weather or seasonal temperature swings. It draws under 13W on a standard PoE Class 3 port — no separate power supply, no conduit for power runs.

Overview

The 300TB-IP (often searched as 300TB IP) bridges the gap between one-way overhead paging and an intercom station. It supports standard one-way paging, multicast background music distribution, and full two-way SIP conversations — meaning the same device that broadcasts a PA announcement can also handle a talk-back exchange with a guard station or front desk. For VoIP intercom deployments where zones need both broadcast and reply capability, that flexibility eliminates a separate intercom head-end at each horn location.

Key Features

• 113 dB SPL Output at 1 Meter: The 6W Class D amplifier drives the 10-inch horn to 113 dB SPL — loud enough to cut through heavy machinery noise, forklift traffic, or outdoor ambient sound in large open areas. If your facility runs above 85 dB ambient, this output level provides the headroom needed to remain intelligible without shouting distance limits.
• Two-Way SIP Talk-Back: Unlike one-way paging horns, the 300TB-IP supports full duplex SIP 2.0 (RFC 3261) conversations. A worker at the horn location can respond directly to the paging source — useful for warehouse dock check-ins, gate entry points, or any location where confirmation or escalation matters.
• Multicast Paging Support: Beyond SIP unicast calls, the unit handles multicast paging streams, which means it integrates into existing IP paging infrastructure without requiring a dedicated SIP call leg per horn. For large multi-zone deployments across a IP paging system, multicast keeps your PBX or paging controller from scaling linearly with horn count.
• PoE Class 3, Under 13W: Powered entirely via 802.3af PoE, the 300TB-IP eliminates local AC power requirements. Under 13W draw means it fits within standard Class 3 budgets on virtually any managed PoE switch without special port allocation — relevant when you're planning a PoE switch budget across many endpoints.
• IP66 Ingress Protection: IP66 means complete dust exclusion and protection against high-pressure water jets from any direction. This is the rating you need for outdoor mounting exposed to rain, pressure washing (common in food processing, warehousing, and transit facilities), or dusty industrial environments. It is not a submersion rating — for flood-prone mounting locations, look at IP67 or higher.
• -40°F to 140°F Operating Range: This temperature envelope covers unheated northern outdoor installations in winter and rooftop or south-facing wall mounts in summer heat. Most commercial IP audio endpoints are rated to 32°F at the low end — this one handles genuine cold-climate outdoor use without a heated enclosure.
• Large 10-Inch Horn, 11.5-Inch Body: The 10-inch diameter horn provides broad dispersion suited to open areas rather than narrow corridors. At 4.1 lbs shipping weight and 11.5 inches in length, plan for a solid wall or ceiling bracket — the horn's physical presence means lightweight junction-box mounting is not appropriate.
• SIP 2.0 RFC 3261 Compliance: Standards-based SIP means the 300TB-IP registers directly with any compliant IP PBX, SIP proxy, or paging controller — Cisco, Avaya, FreePBX, or dedicated paging platforms — without proprietary middleware. 100BASE-Tx network interface keeps cabling straightforward on standard Cat5e/Cat6 runs.
• CE, FCC Part 15, Canada ICES-003 Class A: Regulatory compliance covers US, Canadian, and EU deployments. Class A FCC/ICES rating is appropriate for commercial and industrial environments.

Integration and Compatibility

The 300TB-IP connects to any SIP 2.0-compliant PBX or IP paging platform via standard Ethernet. Multicast support means it can receive zone broadcasts from dedicated paging servers or controllers without consuming a SIP registration slot. The unit operates on a single Cat5e or Cat6 run carrying both data and power via 802.3af — no additional cabling required at the horn location. For deployments using a Viking Electronics paging ecosystem, the 300TB-IP pairs with Viking's SIP paging adapters and controllers natively. Humidity tolerance spans 5–95% non-condensing in standard configuration, making it appropriate for most covered outdoor and indoor industrial environments.

Frequently Asked Questions

Q: Does the 300TB-IP support two-way audio or is it paging-only?

A: The 300TB-IP supports full two-way SIP talk-back conversations in addition to standard one-way paging and multicast background music. It is specifically designed for deployments requiring both broadcast and reply capability from the same horn location.

Q: What PoE standard does the 300TB-IP require?

A: The 300TB-IP uses PoE Class 3 per IEEE 802.3af, drawing under 13 watts. A standard 802.3af-capable switch port is sufficient — no PoE+ (802.3at) required.

Q: Is the 300TB-IP rated for outdoor installation?

A: Yes. The 300TB-IP carries an IP66 ingress protection rating, which covers complete dust exclusion and resistance to high-pressure water jets. Its operating temperature range of -40°F to 140°F supports outdoor mounting in cold climates and high-heat environments without a supplemental enclosure.

Q: What SIP standard does the 300TB-IP use, and will it work with my existing PBX?

A: The 300TB-IP implements SIP 2.0 per RFC 3261, the industry-standard protocol. It is compatible with any compliant SIP PBX or paging controller, including Cisco, Avaya, FreePBX, and dedicated IP paging platforms.

Q: How loud is the 300TB-IP?

A: The 6-watt Class D amplifier drives the horn to 113 dB SPL at 1 meter — sufficient for high-ambient-noise environments including warehouses with active machinery, loading docks, and outdoor industrial yards.

Q: What are the physical dimensions of the 300TB-IP?

A: The horn measures 10.0 inches in diameter and 11.5 inches in length, with a shipping weight of 4.1 lbs. Plan for a robust wall or ceiling mounting bracket appropriate for this size and weight.

Ted Perry

The 300TB-IP is the unit I reach for when a facility needs audible paging that can also answer back — the 113 dB SPL output from the 6W Class D amp is the real differentiator here. Most horn speakers top out around 105–108 dB; those extra 5–8 dB aren't just a number, they're the difference between intelligible speech and noise at a busy dock door or across a concrete floor with forklifts running.

Technical Highlights:

• 113 dB SPL at 1M: 6W Class D amplifier driving a 10-inch horn — meaningful headroom over typical commercial horn speakers in high-ambient environments above 85 dB.
• IP66 + -40°F to 140°F: Dust-tight and jet-wash resistant across a temperature range that covers genuine cold-climate outdoor installs — no heated enclosure required for northern loading dock or gate use.
• SIP 2.0 RFC 3261 + Multicast: Registers as a standard SIP endpoint on any compliant PBX while simultaneously receiving multicast zone broadcasts — one Cat5e/Cat6 run handles power, voice, and paging traffic.

Deployment Considerations:

• The 10-inch horn and 4.1 lb weight require a solid mounting surface — a standard single-gang electrical box will not support this unit. Plan for a dedicated bracket rated for the weight and outdoor exposure of the installation site.
• IP66 covers rain and jet wash but not submersion — if the mounting location is in a flood zone or subject to standing water, this rating is not sufficient and a higher IP-rated enclosure or alternate mounting position is needed.

This is the right horn for covered outdoor or large open indoor paging zones — transit terminals, cold-storage distribution centers, and manufacturing yards — where you need both broadcast reach above industrial ambient noise and the ability to hold a real conversation from the horn location without adding a separate intercom panel.