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Summary of Contents for SpectraLink S Series
- Page 1 Spectralink S Series Release Notes Firmware Version PCS25C - R1.2 2025 Release Notes Spectralink Europe ApS, Bygholm Soepark 21E, Stuen, DK-8700, Horsens, Denmark...
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Page 2: Table Of Contents
Spectralink S Series Table of Contents Introduction ............. 3 Terms and Definitions ....................... 3 Release ..........................3 Upgrading the Handset...................... 3 Changes ................4 Version PCS25C - R1.2 2025 ..................... 4 Version PCS25B - R1.1 2025 ..................... 4 Version PCS25A - R1 2025 ....................4 Version PCS24H - October 2024 .................. -
Page 3: Introduction
Configuration Over The Air Release These combined release notes apply to the released versions of firmware for the Spectralink S 33-35-37 Series handsets. This version specifically applies to version PCS25C - R1.2 2025 of the firmware. This is a main release that replaces previous releases as the latest Generally Available (GA) release. -
Page 4: Changes
Spectralink S Series Changes Version PCS25C - R1.2 2025 Improvements, Added or Changed Features • Further improvements in monitoring and recovery from microphone mute error conditions. Corrections • When receiving an endpoint_sms_advanced the handset could reboot. This issue has been fixed. (DECTESC-1396) •... -
Page 5: Version Pcs24H - October 2024
Spectralink S Series Corrections • Resolved scrambling and encryption corruption issue, which previously could cause a buzzing sound in the handset. Typically, a reboot was required to rectify this; however, this problem is now resolved. (DECTESC-1363) • Addressed one-way audio on earpiece issue. In rare cases, users experienced no audio in the earpiece speaker during calls. -
Page 6: Version Pcs24G - June 2024
Performing SUOTA could cause the handset to end up in a continuously reboot state. This has been fixed. If this happens, the handset must be upgraded via the S Series software updater tool. Version PCS24C - March 2024 Improvements, Added or Changed Features From this version, PCS 24C and forth, the same firmware can be used for all 3 variants of the S-series handsets –... -
Page 7: Version Pcs24A - Feb 2024 (S33 Only)
Spectralink S Series • Adding support for accelerometer (Motion detection) in the S 37 handset. • Added screen lock to security, and adjusted UI as needed. • Implemented low-power-mode. This feature ensures that the handsets consume minimal power during periods of inactivity, thereby extending the operational time between charges. -
Page 8: Version Pcs23F - Nov 2023 (S33 Only)
Spectralink S Series Corrections • High pitch tone could sometimes be heard in the handsets ear speaker. This has been fixed. • When performing subscription, the subscription data could end up not being written to the handset database, resulting in missing subscription after handset reboot. - Page 9 Spectralink S Series • Update embedded Bluetooth firmware to version 29. Corrections • Previously when upgrading a handset placed in a cradle via SUOTA, the update could sometimes stop, and a manual intervention was required. This problem has been fixed.
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