N530 - Release 2.65.0

Send REFER after ACK message for transfer target
Sip-control terminated
Double refer at call forwarding
N repetitions of CCF_ALLOC_REJECT_REASON_PMID_KNOWN for the same TBC (in the same TBC-lifetime), should heal itself
For secure release of all tbcs on STOP or resync, ignore new ST-message by just deactivated slot

Firmware file	File size	MD5	Download link
N530	44.66 MiB	1dd6316cd6060433c5efc37095a7b839	https://profile.gigaset.net/device/99/1/firmware/Gigaset-N530-V2.65.0-build.8504c90.bin
N530 fake software image (for testing upgrade)	44.62 MiB	9502248260f30f40abedd8ee71d95e63	https://profile.gigaset.net/device/99/1/firmware/Gigaset-N530-V999.65.0-build.8504c90.bin