Firmware:

SIP Ring Switch 4xOut

Model 57753

Current firmware
Date	Changes and comments	Revision
December 12, 2022	IP stack - MTU settable IP stack - Improved processing of fragmented UDP packets System start - When boot error occurs update mode is activated for system restore SIP - Use of * in user list improved SIP - Detection of the registration interval for Swyx systems added	1.64 ZIP download

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Older firmware
Date	Changes and comments	Revision
October 28, 2022	DHCP - Processing of the option flags expanded SIP - Processing of fragmented UDP packets improved System start - Configuration initialization optimized	1.63 on request
September 27, 2022	SIP - Problems with manual adding of new subscribers fixed SIP - Register timeout given by the VoIP system is used GUI - Minor optimizations System - Config Upload optimized and accelerated	1.62 on request
August 31, 2022	SIP - Problems with manual adding of new subscribers fixed GUI - Minor optimizations System - Config Upload optimized and accelerated Please use the newest included version of Wutility for the update.	1.60 on request

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