Viking SIP Multicast Paging Horn with Talk Back and Enhanced Weather Protection - 300TB-IP-EWP

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

Overview

The Viking Electronics 300TB-IP-EWP is a SIP 2.0 / multicast network paging horn with two-way talk-back, engineered for harsh outdoor environments where standard IP66 ratings fall short. The Enhanced Weather Protection (EWP) variant tolerates up to 100% humidity — not just splash resistance — making it a reliable choice for car washes, covered loading docks, coastal facilities, and anywhere condensation is a daily reality. A single RJ45 PoE connection handles both power and audio, eliminating the need for a local power circuit at the horn location.

Powered by the Viking Electronics SIP infrastructure, the 300TB-IP-EWP integrates with any SIP 2.0 RFC 3261 compliant phone system or paging controller. Browse the full range of IP intercoms and paging devices to build out a complete campus paging system.

Key Features

• 113 dB SPL at 1 meter: The 6-watt Class D amplifier drives this horn loud enough to cut through ambient noise on factory floors, loading docks, and outdoor yards. At this output level you can typically cover zones where conventional 1–2W horns require multiple units — reducing both hardware count and wiring runs.
• Enhanced Weather Protection — 100% humidity tolerance: Standard IP66 keeps rain and dust out, but the EWP rating goes further, handling full condensing humidity. Deploy this where a car wash bay, steam, or ocean air would destroy a standard outdoor horn within a season.
• IP66 ingress protection: Dust-tight and protected against high-pressure water jets from any direction. Suitable for outdoor mounting without an additional enclosure on most industrial sites.
• PoE Class 3 (802.3af, under 13W): Draws less than 13W from a standard 802.3af switch port — no PoE+ budget required. One Cat5e/6 run powers and connects the horn, keeping installation clean and conduit runs minimal. Pair with a managed PoE switch to simplify deployment across multi-zone paging layouts.
• SIP 2.0 RFC 3261 and multicast support: Registers as a SIP endpoint on any compliant IP-PBX or paging server. Multicast support allows simultaneous broadcast to grouped horns without hair-pinning audio through a call server — critical for large-zone or emergency paging scenarios.
• G.722 wideband codec support: G.722 delivers noticeably clearer speech intelligibility compared to narrowband G.711 — important when paging instructions in noisy environments where every word needs to land clearly. G.711u and G.711a are also supported for compatibility with legacy SIP trunks.
• Two-way talk-back: The built-in microphone lets the remote party respond to pages, enabling gate entry confirmation, dock coordination, or emergency two-way communication without a separate intercom device at the horn location.
• -40°F to 140°F operating range: Covers cold-storage facility exteriors, rooftop installations in desert climates, and unheated warehouses without supplemental heating or cooling. Few IP horns are rated this wide. Review our network audio and paging guide for zone design considerations in temperature-extreme sites.
• 100BASE-Tx / RJ45 connectivity with butt connectors: The two included butt connectors allow field termination of existing wiring runs — useful when retrofitting legacy horn wiring paths to a new IP infrastructure.

Integration and Compatibility

The 300TB-IP-EWP (often searched as 300TB IP EWP) registers as a standard SIP 2.0 endpoint, making it compatible with Cisco, Poly, Grandstream, 3CX, FreePBX, and most enterprise IP-PBX platforms. Multicast paging is supported for zone broadcast architectures. The horn operates on a standard 100BASE-Tx network — no VLAN specialization required, though QoS tagging of the audio stream is recommended on congested networks. For complete IP paging system design, ensure your PoE switch can supply 802.3af Class 3 to each horn port.

Frequently Asked Questions

Q: What is the difference between the 300TB-IP and the 300TB-IP-EWP?

A: The EWP (Enhanced Weather Protection) variant is rated for up to 100% humidity, compared to the standard model's 5–95% non-condensing limit. Both share the same IP66 rating, 113 dB SPL output, and PoE Class 3 power draw. Choose the EWP for car washes, steam environments, or coastal installations.

Q: Does the 300TB-IP-EWP require a separate power supply?

A: No. It draws power via IEEE 802.3af PoE (Class 3, under 13W) directly from the network switch. No separate power circuit or injector is required as long as your switch port delivers standard 802.3af.

Q: What SIP codecs does the 300TB-IP-EWP support?

A: For SIP calls, it supports G.711u, G.722, and G.711a. For multicast paging, G.711u and G.722 are supported. G.722 provides wideband (HD) audio for improved speech clarity in noisy environments.

Q: Can the 300TB-IP-EWP be used for two-way communication?

A: Yes. The talk-back feature includes a built-in microphone so the far end can respond to pages, supporting applications like gate entry, dock check-in, or emergency two-way audio without a separate intercom unit.

Q: What is the operating temperature range of the 300TB-IP-EWP?

A: -40°F to 140°F (-40°C to 60°C), making it suitable for cold-storage exteriors, rooftop installations in hot climates, and unheated industrial spaces.

Q: What network protocol does the 300TB-IP-EWP use?

A: It operates on 100BASE-Tx Ethernet over RJ45, complying with SIP 2.0 RFC 3261 and IEEE 802.3af PoE. Multicast audio distribution is also supported for zone paging without a call server in the audio path.

Karl Wilson

The 300TB-IP-EWP is the horn I spec when a standard IP66 rating isn't enough. The EWP designation pushes humidity tolerance to 100% — that's the spec that matters at a car wash bay or a coastal loading dock where daily condensation would compromise a conventional outdoor horn within months. At 113 dB SPL at 1 meter, the 6W Class D amplifier has real headroom for noisy industrial environments, not just parking lot announcements.

Technical Highlights:

• 100% Humidity (EWP): Goes beyond IP66 to handle full condensing moisture — the deciding factor in car wash, food processing, or high-humidity industrial installs where standard outdoor ratings fail over time.
• 113 dB SPL / 6W Class D: Enough output to cover large zones with a single horn. Class D efficiency keeps the draw under 13W (802.3af Class 3), so you won't need PoE+ ports or a separate power circuit at each horn location.
• G.722 Wideband Codec: Clearer speech in loud environments compared to G.711 narrowband — worth specifying when intelligibility matters (safety announcements, gate coordination) rather than just background music paging.

Deployment Considerations:

• Two butt connectors are included for field termination — useful when you're retrofitting into an existing conduit run, but plan your cable routing to maintain the IP66/EWP seal integrity at the entry point.
• Multicast support removes the call server from the audio path for zone broadcasts, but verify your network switch supports IGMP snooping if you're running multicast across VLANs — without it, multicast floods all ports and can impact network performance on larger deployments.

This horn is the right fit for facility-wide emergency paging or dock coordination at food processing plants, car wash facilities, and outdoor transit hubs — environments where the combination of extreme temperature swing (-40°F to 140°F), full humidity exposure, and the need for two-way confirmation in a single PoE device rules out most alternatives.