Cisco SPA921 IP Phone Firmware 5.1.8 Download

Posted at April 29, 2024 by PCI-DB Team

Cisco SPA921 IP Phone Firmware 5.1.8 Description

Fixes:

- SPA should escape occurrences of '#' in the dial string with 23 percent in outbound INVITE
- SDP in INVITE response, includes annexb=yes/no if present in INVITE message
- Fixed HTTPS with client authentication out-of-memory condition.
- bug fix: network ring back distortion
- bug fix: Phone does not allow dialing '#' key in the phone number
- If keep alive msg is not a valid $SIP-METHOD macro and keep alive destination is $PROXY, and REGISTER is enabled, the keep alive message should be sent to the last Register destination. But this does not work.
- Fixed this bug: If phone receives a NOTIFY with an unknown event, it might reboot
- Fixed: Phone will not play network ringback even if early media is negotiated to G711
- Fixed this problem: Phone does not use the same Authorization header fields in the ACK as in the corresponding INVITE, per RFC 3261

New Features:

- Disable 2 --> 4 line license upgrade feature. Make 4 extensions phone as default
- On incoming page, do not automatically put the current calls on hold. Instead mix the incoming audio with that of the currently active calls
- improve speakerphone
- Phone will reply 200 OK to a NOTIFY/ping event inside a dialog
- Added Broadsoft shared call appearance bridging support

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.

Related Cisco Drivers