Desktop IP Intercom & Paging Station
7" Screen • Full-Duplex Intercom • 2W Speaker • Short-circuit I/O • Customizable Ring Tones
T-7700A
Simple, reliable desktop communication. The T-7700A is a compact IP intercom and paging station designed for everyday workplace communication. Featuring a 7-inch display, full-duplex audio with echo cancellation, and built-in 2W speaker, it provides crystal-clear two-way conversations. Ideal for reception desks, nurse stations, security posts, and administrative offices.
| Model Number | T-7700A |
| Product Type | Desktop IP Intercom / Paging Station |
| Display | 7-inch TFT LCD |
| Resolution | 800 x 480 pixels |
| Audio Communication | Full-Duplex with Acoustic Echo Cancellation (AEC) |
| Speaker | Built-in 2W |
| Microphone | Built-in electret condenser |
| Audio Inputs | 3.5mm external MIC input |
| Audio Outputs | 3.5mm headphone output |
| Network | 10/100Mbps Ethernet (RJ45) |
| Protocols | TCP/IP, UDP, HTTP, SIP (compatible) |
| I/O Ports | 1 x Short-circuit Input, 1 x Short-circuit Output |
| Ring Tones | Customizable, multiple melodies |
| Power Supply | DC 12V / PoE (IEEE 802.3af) |
| Power Consumption | ≤ 6W |
| Mounting | Desktop (rubber feet), wall-mount optional |
| Dimensions (WxDxH) | 200 x 140 x 50 mm |
| Weight | 0.9 kg |
| Operating Temperature | 0°C – 40°C |
| Humidity | 10% – 90% non-condensing |
| Color | Black / Silver |
| Certifications | CE, FCC, RoHS |
Note: T-7700AN is an identical model with minor variant in ring tone memory. Specifications apply to both T-7700A and T-7700AN.
The T-7700A is a cost-effective, full-featured desktop IP intercom station for the ITC T-7700 Series network audio system. It provides instant two-way communication with any other intercom station, paging microphone, or emergency help point on the network. Its compact footprint and intuitive 7-inch touch interface make it ideal for high-traffic environments where staff need to communicate quickly and clearly.
Clear Audio, Simple Operation: Full-duplex audio with acoustic echo cancellation ensures natural, interruption-free conversations. The built-in 2W speaker provides ample volume for office environments, while the 3.5mm headphone jack allows for private listening. The 7-inch color display shows caller ID, call history, and directory with large, easy-to-press buttons.
Flexible I/O for Automation: A short-circuit input can trigger a call to a preset destination (e.g., security) when a door sensor is activated. The short-circuit output can control an external strobe light or door strike, enabling basic access control or visual alerting directly from the intercom.
Simultaneous talk/listen with advanced echo cancellation. Wideband audio (100Hz-7kHz) for exceptional voice clarity.
1 input, 1 output. Trigger calls from sensors, or activate relays/lights upon call arrival. 5V TTL levels, configurable.
Upload custom WAV files via server. Differentiate call types (internal, emergency, door) by distinct ring tones.
The T-7700A is fully PoE compliant (IEEE 802.3af Class 2). One Ethernet cable carries both data and power. For non-PoE networks, a 12V DC adapter is included. Typical power consumption is only 4-6W.
| Port | Type | Voltage/Current | Configurable Actions |
|---|---|---|---|
| Input | Dry contact (optically isolated) | 3.3V DC, 5mA |
• Call specific extension • Trigger all-call paging • Play preset message • Send email alert (via server) |
| Output | Open collector | 30V DC, 100mA max |
• Activate on incoming call • Activate during paging • Toggle on/off via touch • Pulse for door strike |
Input requires external potential-free contact. Output can drive small relays, LED indicators, or electronic door strikes.
The T-7700AN is functionally identical to the T-7700A with the same hardware specifications. The 'N' designation indicates a different firmware region for ring tone storage and minor UI language defaults. Both models are interchangeable and managed identically via T-7700RP software.
| Model | Display | Programmable Keys | Audio I/O | Special Features | Best For |
|---|---|---|---|---|---|
| T-7700A / AN | 7" TFT | 0 (touch only) | 2W spk, MIC in, HP out | Short-circuit I/O | Desktop intercom, basic paging |
| T-7702A | 7" Resistive | 10 | 2W spk, MIC in, HP out | 10 programmable keys | General paging & intercom |
| T-7702M | 7" Capacitive HD | 12+6 | 8x AUX, 10x LINE, XLR | FM/SD/USB, 1km remote | Broadcast, complex mixing |
The T-7700A desktop intercom is distinct from the T-7700A high-performance IP controller (server hardware). Ensure correct model selection when ordering. The desktop intercom is for end-user communication; the controller is the central server. Both share the same model number prefix but are entirely different product categories.
All T-7700A intercom settings – directory, speed dial, ring tones, I/O actions – are configured and pushed from the T-7700RP server. This enables uniform configuration across hundreds of desktop intercoms with zero local programming.
The T-7700A supports remote firmware upgrade via TFTP/HTTP from the server. New features and security patches are deployed centrally without visiting each desktop station.