Powerful ceiling audio
A 30W coaxial speaker and HD acoustic chamber support clearer announcements across correctly designed indoor zones.
Not sure what you need?
Read our complete guide.
Not sure what you need?
Read our complete guide.
Grandstream • SKU GSC3506V2
A one-way 30-watt in-ceiling SIP and multicast paging speaker with full-band audio, alarm integration and PoE through PoE++ power options.

The GSC3506 v2 is built for distributed announcements and public-address coverage across offices, schools, hospitals, apartments and similar facilities. It combines a 30W high-fidelity coaxial speaker and HD acoustic chamber with SIP paging, multicast paging, group paging, push-to-talk workflows and priority override. It has no microphone for two-way intercom use.
Quick answer: Choose GSC3506 v2 for one-way network paging where in-ceiling installation, 30W audio and SIP or multicast control are required. Confirm the acoustic design, network multicast policy and power class before rollout.
A 30W coaxial speaker and HD acoustic chamber support clearer announcements across correctly designed indoor zones.
Use SIP, multicast, group paging, push-to-talk and priority override within the supported network design.
Switch input, alarm input, differential line output and USB support help connect the speaker to wider paging workflows.
A quick fit check for Australian businesses comparing equipment for users, rooms, sites or wider projects.
| Exact model | GSC3506 v2 |
|---|---|
| Audio direction | One-way speaker; no microphone |
| Speaker | 30W high-fidelity coaxial, 110Hz20kHz |
| Network | 1 × 10/100 Mbps Ethernet |
| Power | PoE 802.3af, PoE+ 802.3at, PoE++ 802.3bt or 24V DC/2.5A |
| I/O | Switch input, alarm input, 3-pin differential line out, USB 2.0 |
No. It is a one-way paging speaker and does not include a microphone.
Grandstream specifies a 30W high-fidelity coaxial speaker with an HD acoustic chamber.
Yes. It supports SIP, multicast and group paging, push-to-talk and call waiting with priority override.
Yes. It supports 802.3af PoE, 802.3at PoE+ and 802.3bt PoE++. Confirm the power budget required for the deployment.
No. The manufacturer package list does not include a power adapter. Use compatible PoE or an approved optional 24V DC/2.5A supply.
It has one 10/100 Mbps Ethernet port with integrated PoE support.
It provides switch and alarm inputs plus a three-pin differential line output for supported integrations.
Yes. Provide floor plans, zone count, ceiling type, network switches, PBX or SIP platform, required volume and quantity.
Deliver high-output announcements through an in-ceiling coaxial speaker.
Build flexible announcement zones using compatible call and multicast infrastructure.
Allow supported higher-priority pages to interrupt lower-priority audio.
Opus and G.722 support clear network audio on a correctly engineered system.
Connect supported triggers and downstream audio equipment through the onboard I/O.
Provision and maintain compatible Grandstream deployments through GDMS or supported provisioning methods.
Best for: schools, hospitals, offices, apartments, retail sites and multi-zone indoor SIP paging projects.
| DigiPhone SKU | GSC3506V2 |
|---|---|
| Product type | In-ceiling SIP and multicast paging speaker |
| Audio direction | One-way; no microphone |
| Speaker | 30W high-fidelity coaxial speaker |
| Frequency range | 110Hz20kHz |
| Maximum SPL | 99dB |
| Paging | SIP, multicast, group paging, PTT and priority override |
| Audio codecs | Includes Opus and G.722 full/wide-band support |
| Ethernet | 1 × 10/100 Mbps |
| PoE | 802.3af Class 3, 802.3at Class 4, 802.3bt Class 6 |
| DC input | 24V DC/2.5A |
| Auxiliary ports | 2-pin switch input, 2-pin alarm input, 3-pin differential line out, USB 2.0 |
| Management | GDMS/TR-069 and encrypted XML provisioning |
| Power supply | POWER SUPPLY IS NOT INCLUDED. Compatible PoE or optional DC supply required |
| Manufacturer warranty | 1-year Grandstream manufacturer warranty |
Compatibility note: Confirm SIP/PBX support, multicast and VLAN design, PoE class or optional DC supply, ceiling mounting, acoustic coverage and one-way audio requirements.
| SKU | GSC3506V2 |
| Barcode # | 6947273705123 |
| Brand | GRANDSTREAM |
| Shipping Weight | 2.9000kg |
This DigiPhone listing is supplied as an Australian version and is covered by a one-year Grandstream manufacturer warranty in Australia, subject to Grandstreams terms for this exact product. Warranty service is subject to the manufacturers terms and proof-of-purchase requirements.
Your rights under this warranty are in addition to rights available under the Australian Consumer Law. Keep your DigiPhone invoice and product serial number for any claim.
Bulk and project support: For fleet deployments, spare units or warranty planning, contact DigiPhone with the SKU and required quantity.
Grandstream • SKU GSC3506V2
A one-way 30-watt in-ceiling SIP and multicast paging speaker with full-band audio, alarm integration and PoE through PoE++ power options.

The GSC3506 v2 is built for distributed announcements and public-address coverage across offices, schools, hospitals, apartments and similar facilities. It combines a 30W high-fidelity coaxial speaker and HD acoustic chamber with SIP paging, multicast paging, group paging, push-to-talk workflows and priority override. It has no microphone for two-way intercom use.
Quick answer: Choose GSC3506 v2 for one-way network paging where in-ceiling installation, 30W audio and SIP or multicast control are required. Confirm the acoustic design, network multicast policy and power class before rollout.
A 30W coaxial speaker and HD acoustic chamber support clearer announcements across correctly designed indoor zones.
Use SIP, multicast, group paging, push-to-talk and priority override within the supported network design.
Switch input, alarm input, differential line output and USB support help connect the speaker to wider paging workflows.
A quick fit check for Australian businesses comparing equipment for users, rooms, sites or wider projects.
| Exact model | GSC3506 v2 |
|---|---|
| Audio direction | One-way speaker; no microphone |
| Speaker | 30W high-fidelity coaxial, 110Hz20kHz |
| Network | 1 × 10/100 Mbps Ethernet |
| Power | PoE 802.3af, PoE+ 802.3at, PoE++ 802.3bt or 24V DC/2.5A |
| I/O | Switch input, alarm input, 3-pin differential line out, USB 2.0 |
No. It is a one-way paging speaker and does not include a microphone.
Grandstream specifies a 30W high-fidelity coaxial speaker with an HD acoustic chamber.
Yes. It supports SIP, multicast and group paging, push-to-talk and call waiting with priority override.
Yes. It supports 802.3af PoE, 802.3at PoE+ and 802.3bt PoE++. Confirm the power budget required for the deployment.
No. The manufacturer package list does not include a power adapter. Use compatible PoE or an approved optional 24V DC/2.5A supply.
It has one 10/100 Mbps Ethernet port with integrated PoE support.
It provides switch and alarm inputs plus a three-pin differential line output for supported integrations.
Yes. Provide floor plans, zone count, ceiling type, network switches, PBX or SIP platform, required volume and quantity.
This DigiPhone listing is supplied as an Australian version and is covered by a one-year Grandstream manufacturer warranty in Australia, subject to Grandstreams terms for this exact product. Warranty service is subject to the manufacturers terms and proof-of-purchase requirements.
Your rights under this warranty are in addition to rights available under the Australian Consumer Law. Keep your DigiPhone invoice and product serial number for any claim.
Bulk and project support: For fleet deployments, spare units or warranty planning, contact DigiPhone with the SKU and required quantity.
Deliver high-output announcements through an in-ceiling coaxial speaker.
Build flexible announcement zones using compatible call and multicast infrastructure.
Allow supported higher-priority pages to interrupt lower-priority audio.
Opus and G.722 support clear network audio on a correctly engineered system.
Connect supported triggers and downstream audio equipment through the onboard I/O.
Provision and maintain compatible Grandstream deployments through GDMS or supported provisioning methods.
Best for: schools, hospitals, offices, apartments, retail sites and multi-zone indoor SIP paging projects.
| DigiPhone SKU | GSC3506V2 |
|---|---|
| Product type | In-ceiling SIP and multicast paging speaker |
| Audio direction | One-way; no microphone |
| Speaker | 30W high-fidelity coaxial speaker |
| Frequency range | 110Hz20kHz |
| Maximum SPL | 99dB |
| Paging | SIP, multicast, group paging, PTT and priority override |
| Audio codecs | Includes Opus and G.722 full/wide-band support |
| Ethernet | 1 × 10/100 Mbps |
| PoE | 802.3af Class 3, 802.3at Class 4, 802.3bt Class 6 |
| DC input | 24V DC/2.5A |
| Auxiliary ports | 2-pin switch input, 2-pin alarm input, 3-pin differential line out, USB 2.0 |
| Management | GDMS/TR-069 and encrypted XML provisioning |
| Power supply | POWER SUPPLY IS NOT INCLUDED. Compatible PoE or optional DC supply required |
| Manufacturer warranty | 1-year Grandstream manufacturer warranty |
Compatibility note: Confirm SIP/PBX support, multicast and VLAN design, PoE class or optional DC supply, ceiling mounting, acoustic coverage and one-way audio requirements.
| SKU | GSC3506V2 |
| Barcode # | 6947273705123 |
| Brand | GRANDSTREAM |
| Shipping Weight | 2.9000kg |
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