Release 2.61.2

SIP control terminated fix
Synchronization mode is set from LAN to DECT for a short time when dlsd reports aysnc

Firmware file	File size	MD5	Download link
N610/N670/N870	45.1 MB	37c9f143bc523f1f56480bc7f1d74440	https://profile.gigaset.net/device/83/1/firmware/Gigaset-Nx70-V2.61.2-build.eb99619.bin
N610/N670/N870 fake software image (for testing upgrade)	45 MB	5f56d89ed5221fb8d24207bba4acb161	https://profile.gigaset.net/device/83/1/firmware/Gigaset-Nx70-V999.61.2-build.eb99619.update.bin
Virtual Integrator only (VI) Activation CODE: EFA237
VI: VM Sphere ESXi (5.5, 6.0 and 6.5) or VMware workstation 14 Player (zip file)	680.9 MB	b4503882878417fe15a8f36f5fab3d69	https://profile.gigaset.net/device/83/1/firmware/Gigaset-VI-V2.61.2-build.eb99619.zip
VI: Oracle VM VirtualBox (ova file)	686.5 MB	8a66451c0bf4e01d191945cae82b32b4	https://profile.gigaset.net/device/83/1/firmware/Gigaset-VI-V2.61.2-build.eb99619.ova
VI: Hyper-V	682.5 MB	1c728d0f212747497dfb91d547459d54	https://profile.gigaset.net/device/83/1/firmware/Gigaset-VI-V2.61.2-build.eb99619.HyperV.zip
VI: Upgrade an existing VI system	93.2 MB	f08bc2e8217042b6c4cc2362c76f904d	https://profile.gigaset.net/device/83/1/firmware/Gigaset-VI-V2.61.2-build.eb99619.update.bin
VI: fake software image (for testing upgrade)	93.1 MB	09bc2cd7c79a62e81deeddfea0f50836	https://profile.gigaset.net/device/83/1/firmware/Gigaset-VI-V999.61.2-build.eb99619.update.bin