30 W SIP and multicast paging speaker
The Grandstream GSC3506 V2 is a 30 W HD SIP and multicast paging speaker for offices, schools, hospitals and apartments. It supports SIP paging, multicast and group paging, push-to-talk and priority override, and can be powered by PoE, PoE+ or PoE++, or by a separate DC supply (sold separately). It works with SIP-based phone systems and Grandstream GDMS.
- 30 W Speaker: Coaxial HD speaker with acoustic chamber.
- Paging Modes: SIP paging, multicast paging, group paging and push-to-talk.
- Priority Control: Call waiting with priority override; built-in blocklists and allowlists.
- HD Codecs: Full-band and wideband codecs including Opus and G.722.
- PoE Powered: 10/100 Mbps port with PoE (802.3af), PoE+ (802.3at) and PoE++ (802.3bt).
- Inputs and Outputs: Switch-in, alarm-in and differential line-out.
- USB Storage: USB 2.0 port for external storage.
- Security and Provisioning: Secure boot; GDMS, TR-069 and encrypted XML provisioning.
- Ceiling Installation: Supplied cut-out template for the mounting hole.

Specification
- Brand: Grandstream
- Model: GSC3506 V2
- Speaker: 30 W coaxial; 110 Hz – 20 kHz; sensitivity up to 95 dBA (1 W/1 m); max SPL 99 dB
- Network: 1 x 10/100 Mbps RJ45; PoE Class 3 / PoE+ Class 4 / PoE++ Class 6
- Power: PoE, or DC input (DC supply sold separately)
- Auxiliary: 2-pin switch-in, 2-pin alarm-in, 3-pin differential line-out, 2-pin DC input
- Dimensions: 257.5 mm diameter x 118 mm depth
- Weight: 2.14 kg (unit); 2.76 kg (package)
- Operating Environment: 0 °C to 45 °C; 10% to 90% humidity, non-condensing
- Compliance: RCM
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What's in the Box:
- GSC3506 V2 speaker
- Mounting hole cut-out template
- Quick Installation Guide