In case you want to use this feature you need to cooperate with another SIP proxy. There you have got registered users. When you want to create ME for one of these users go to the ME menu in 2N® VoiceBlue Lite. There create the same user with the same authentication parameters like in SIP proxy. Of course you have to fill GSM number as well. For proper registration this user from 2N® VoiceBlue Lite into SIP proxy you need to register whole 2N® VoiceBlue Lite in the same SIP proxy. You need to fill name, user name and password in SIP parameters menu and also SIP registration field in the same menu (with the address of SIP proxy).
More product information: