One-way VoIP audio
Trace the missing direction from advertised media address to receiving endpoint.
Asterisk 22 LTS · FreePBX 17 / Debian 12 checksOne search across the technical library, device research, videos, providers and tools.
Trace the missing direction from advertised media address to receiving endpoint.
Asterisk 22 LTS · FreePBX 17 / Debian 12 checksCompare the exact working and failing call phase, SDP direction and RTP path across hold, resume, transfer or idle time before changing NAT, direct-media or timeout controls.
RFC 3264 offer/answer behavior, current Asterisk res_pjsip media controls and Wireshark RTP analysis documentation reviewed October 5, 2026; no PBX, endpoint, trunk, firewall, packet stream, media transition or call testedTrace the final SDP and observed RTP through both FreePBX call legs before changing NAT, direct media, symmetric RTP, Strict RTP, codecs or security.
Sangoma PBX GUI Asterisk SIP Settings and legacy FreePBX 12 SIP-audio guidance plus current Asterisk res_pjsip NAT, configuration, troubleshooting, CHANNEL and bounded-debug references reviewed October 6, 2026; the legacy Sangoma page is chan_sip-era symptom and settings context, not a FreePBX 17 PJSIP configuration recipe, and no PBX, firewall, endpoint, trunk, packet flow or live call was inspected or testedSeparate application login, endpoint registration, call signaling, selected devices, WebRTC reachability and two-way media before changing credentials or network policy.
Current VoIPstudio download, Desktop Softphone, user-introduction, endpoint-administration and network-troubleshooting documentation reviewed October 16, 2026; the public download surface lists Windows, Windows MSI, macOS Intel, macOS Silicon and Linux paths but does not publish one common desktop build number, and no package, workstation, operating-system permission, user account, endpoint record, VPN, firewall, WebRTC test, SIP Test, MTR result, packet, protected session, media stream or live call was inspected or testedEvaluate the service-specific Windows, macOS and Linux desktop client without treating an online icon, selected device or WebRTC test as proof of a completed two-way call.
Current VoIPstudio download, Desktop Softphone, user-introduction, endpoint-administration and network-troubleshooting documentation reviewed October 16, 2026; the public download surface lists Windows, Windows MSI, macOS Intel, macOS Silicon and Linux paths but does not publish one common desktop build number, and no package, workstation, operating-system permission, user account, endpoint record, VPN, firewall, WebRTC test, SIP Test, MTR result, packet, protected session, media stream or live call was inspected or testedEvaluate the 8201 as a one-extension SIP door intercom whose call button, relay, sensor, multicast, outdoor installation and management paths require separate acceptance.
Algo · Outdoor SIP door and room intercomEvaluate the 8211 as a standalone PoE button with separate press and long-press actions, outbound prerecorded SIP audio, multicast, API and supervision boundaries.
Algo · Standalone PoE single call and alert buttonEvaluate the V62 Pro while keeping its BTH60 Bluetooth handset, SIP identities, DSS controls, power, headset paths, firmware and service acceptance independently verifiable.
Fanvil · SIP desk phone with Bluetooth handsetEvaluate the V64 as a 12-line desk phone while keeping SIP identities, DSS assignments, active calls, radios, ports, power, firmware and PBX-dependent features separate.
Fanvil · Business SIP desk phone with built-in Wi-Fi and BluetoothEvaluate the V66 Pro while keeping its touch interface, BTH60 handset, receive-side video, Wi-Fi, Bluetooth, platform-document conflict, firmware and call service exact.
Fanvil · Touch-screen SIP desk phone with Bluetooth handset and receive-side videoEvaluate the V67 as an Android SIP video desk phone while keeping its 20 identities, touch interface, camera, applications, DSS assignments, conferencing, radios, security controls and firmware separate.
Fanvil · Android SIP video desk phone with adjustable touch display, built-in Wi-Fi and BluetoothChoose an explicit audience, verify endpoint auto-answer and distinguish broadcast delivery from two-way intercom.
FreePBX 17 paging-module source plus Sangoma's version-13-labelled Paging and Intercom guide and current Sangoma phone header documentation reviewed September 29, 2026; no PBX, page group, endpoint, header, firmware, audio path or live page was testedSeparate the room's SIP, meeting-control and BYOD audio paths before accepting microphone reach, mobility or conferencing behavior.
Grandstream · Conference phone and room-audio endpointAssess the white GHP630W as a Wi-Fi 6 or PoE guest-room SIP phone without transferring black-model, wired-only or package details from its siblings.
Grandstream · Wi-Fi 6 and PoE guest-room SIP phoneAssess the black, wired-only GHP631 by its PoE path, color display and room-service workflow without importing Wi-Fi or local-adapter evidence from W siblings.
Grandstream · Wired PoE guest-room SIP phoneAssess the black GHP631W as a Wi-Fi 6 or PoE guest-room SIP phone while preserving its exact color, radio, power, conference and package boundaries.
Grandstream · Wi-Fi 6 and PoE guest-room SIP phoneEvaluate the GSC3506 v2 as a microphone-free 30 W SIP and multicast paging speaker with PoE++ input, analog output and sensor-trigger boundaries.
Grandstream · SIP and multicast paging speakerPlan a two-way indoor paging endpoint with SIP, multicast, PoE and microphone privacy boundaries.
Grandstream · SIP intercom and paging speakerEvaluate the GSC3570 as a four-account SIP intercom and facility-control panel while keeping video, alarm I/O, relay ownership, storage, firmware and physical safety independently observable.
Grandstream · HD intercom and facility control stationUse symptoms and evidence to isolate registration, routing, media and device faults.
FoundationalEvaluate the CP925 as a SIP conference phone with local conferencing, separate USB or Bluetooth BYOD paths and an optional analog PSTN accessory; treat published pickup and security features as capabilities to verify in the intended room and configuration.
Yealink · Conference phoneEvaluate the CP935W as a battery-powered Wi-Fi SIP conference phone while keeping its registered SIP, Bluetooth, USB host, battery, room-audio and firmware paths separate.
Yealink · Battery-powered Wi-Fi SIP conference phoneEvaluate the CP935W-Base as a CP935W conference endpoint attached to a W70B single-cell DECT base, keeping endpoint, base, account, radio, host-audio and battery limits distinct.
Yealink · Battery-powered conference phone with W70B single-cell DECT baseEvaluate the current CP965 as an exact SIP conference-phone model, keeping its room pickup, one SIP account, local conference, hybrid-host paths, expansion microphones, PoE and firmware lane separate.
Yealink · Conference phone