[. . . ] Gigaset C590 IP your perfect companion Gigaset C590 IP your perfect companion . . . Go crazy for the vibrant 3. 5" TFT display and first-class sound quality. Your Gigaset can do a lot more than just make calls: Ethernet port Connect your Gigaset to the Internet and your PC via Ethernet. Update the directory on your Gigaset and your directory on the PC simultaneously. Directory for 150 vCards appointments Save phone numbers and other data to the local directory ( page 71). [. . . ] After the second repetition the wake-up call is deactivated completely. 123 Using a handset as a room monitor Using a handset as a room monitor If the room monitor is activated, the phone number saved in the system is called as soon as a set noise level is reached. You can save an internal or external number in your handset as the destination number. The room monitor call to an external number is cancelled after approximately 90 seconds. The room monitor call to an internal number (handset) stops after approx. When the room monitor is activated, all keys are locked except the end call key. When room monitor mode is activated, incoming calls to the handset are indicated without a ringtone and are only shown on the display. The display and keypad are not illuminated and advisory tones are also turned off. If you accept an incoming call, the room monitor is suspended for the duration of the call, but the function remains activated. If you deactivate then reactivate the handset, the room monitor remains activated. u Always check the operation of the room monitor before use. Check the connection if you are diverting the room monitor to an external number. u Activating the function significantly reduces the operating time of your handset. u Ideally the handset should be positioned 1 to 2 metres away from the baby. u The connection that the room monitor is diverted to must not be blocked by an activated answering machine. 124 Using a handset as a room monitor v Additional Features Room Monitor You can enter data in the following fields: Activation: Select On to activate. External number: select the number from the directory (press display key ) or enter it directly. Internal number: press the display key Change select the handset or Call All to call all registered handsets OK. In idle status, the destination number or the internal destination number is displayed. When the room monitor function is activated, the idle display looks like this: i V Activating the room monitor and entering the destination number INT 1 Room Monitor 0891234567 OFF Options 07:15 22 Oct Changing the destination number saved v Additional Features Room Monitor Enter and save number as described in "Activating the room monitor and entering the destination number" ( page 125). Cancelling/deactivating the room monitor Press the end call key a to cancel the call when the room monitor is activated. In idle status, press the display key OFF to deactivate room monitor mode. 125 Using a handset as a room monitor Deactivating the room monitor remotely Prerequisites: u The telephone must support tone dialling u The room monitor call is diverted to an external destination number. u If room monitor is activated via a VoIP connection, the DTMF signalling must be done via SIP info or RFC2833 ( page 176). Accept the call from the room monitor and press keys 9 ;. The room monitor function will deactivate after the call ends. The other room monitor settings on the handset (e. g. , no ringtone) remain activated until you press the display key OFF on the handset. To reactivate the room monitor function with the same phone number: Reactivate and save with Save ( page 125). 126 Connecting/using other handsets Connecting/using other handsets You can register up to six handsets and six Gigaset repeaters to your base. Each registered device is assigned an internal number (1 6) and an internal name (INT 1 INT 6). [. . . ] Symmetric NAT A symmetric NAT assigns different external IP addresses and port numbers to the same internal IP addresses and port numbers depending on the external target address. T TCP Transmission Control Protocol Transport protocol. Session-based transmission protocol: it sets up, monitors and terminates a connection between sender and recipient for transporting data. STUN replaces the private IP address in the VoIP telephone data packets with the public address of the secure private network. To control data transfer, a STUN server is also required on the Internet. [. . . ]