AASTRA DT692 Cordless for MXONE Quick Reference Guide EN - Manual (Page 64)

1424-EN/LZT 103 090 Uen D 2010-02-12 64
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1. Press 7 to activate the non-IP hand-over service.
The ongoing call on the IP network is switched over the non-IP
network immediately, without interrupting the call.
Note: This service is only available when your call has been established
on the IP network. The non-IP hand-over service is not available
for QSIG-MD private networks that use an intranet network
managed according to the IPNetworking technique.