56CN2x4 SIP Phone User’s Manual• Authentication ID: authentication ID assigned by administrator. Four for four lines.• Password: the authentication password assigned by administrator. Four for four lines.• Call Wait While In Use: enable or disable call waiting function.• Call Forward Type: choosenot forword of one of five call forward types• Call Forward Number: the object number of call forwarding.• Voice Mail Number: the connect number of voice mail system.• Hot Line Number: the object number of hot line.• Dial Plan: set the dial plan; (more about it see 7.3.1.1Single Server Mode )• Ring Type: every line has its own ring type.• Auto Answer Mode: CN2x4 SIP Phone supports auto answer feature, there are two modesif enabled.- All Coming Calls: auto-answer all coming calls.- Base On List: only auto-answer the numbers on the list (the maximum is 20 numbers).• Audio Codec Preference: the order of audio codec, or enable or disable certain codec.Press "Audio Codec Preference >>" to check corresponding setting, see figure 7-17:- Enable: check or not, enable or disable.- Ordering: these codec orderes by priority. Choose one codec and use [Move Up] or[Move Down] to adjust the order.7.3.2 Advanced SettingsAdvanced settings involve some advanced features about call and speech. If you are not sureabout them, contact professionals or keep default settings.On Call Settings page, click right "Advanced Settings>>" to check and set. (see figure 7-18)Figure 7-17 Call Settings - Multiple Server SIP Work Mode - Audio Codec Preference