
Grandstream One Way Sip Intercom Speaker/no Mic 15 Watt Speaker - GSC3506
4 interest-free payments of—with

4 interest-free payments of—with
GR-GSC3506
The GSC3506 is a 1-way public address SIP speaker that allows offices, schools, hospitals, apartments, and more to build powerful public address announcement solutions that expand security and communication. This robust SIP speaker offers crystal clear HD audio functionality with a high-fidelity 30-watt HD speaker.

The GSC3506 support built-in whitelists, blacklists, and greylists to easily block unwanted calls, SIP and multicast paging, group paging, and PTT. The users can easily sculpt a state-of-the-art security and PA announcement solution. Thanks to its modern industrial design and rich features, the GSC3506 is the ideal SIP speaker for any setting.
Speaker with HD acoustic Chamber |
Features SIP paging, multicast paging, call-waiting with priority override |
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Full-band and wide-band audio codec support including Opus & G.722 | |
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1x 2-pin switch-in input port, 1x Alarm-in input port, vol+/- Key, reset, 1x network port, 1x USB port |
One 10/100Mbps network port with PoE/ PoE+ |
Speaker with HD acoustic chamber
Features SIP paging, multicast paging, and call-waiting with priority override
Full-band and wide-band audio codec support including Opus & G.722
1x 2-pin switch-in input port, 1x Alarm-in input port, vol+/- Key, reset, 1x network port, 1x USB port
One 10/100Mbps network port with PoE/ PoE+

We dispatch from Sydney and the Gold Coast. Most orders placed before 2pm AEST on a business day go out the same day.
| Free shipping | On orders over $200 (standard, AU only) |
|---|---|
| Same-day dispatch | For orders placed before 2pm AEST, Mon–Fri |
| Standard delivery | 2–7 business days (metro & regional AU) |
| Express delivery | 1–3 business days (calculated at checkout) |
| Returns | 30 days on unopened, resaleable goods · view policy |
| Warranty claims | Handled directly with InFront — no need to deal with the manufacturer |
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