No.

Description 

1

Default values
Arranges the audio codecs to the default settings, optimized for broadband access (high-speed DSL) or narrowband access (slow DSL).

2

Audio Codecs
Voice encoders/decoders (codecs) are activated and deactivated by enabling/disabling the corresponding checkboxes.

Depending on your preferences, you can set the priority for each codec by clicking at the buttons depicting arrows. Otherwise will your phone transmit the preferred codec order to the server and a suitable codec will be chosen to establish your call. By clicking at the “Reset to defaults” button will the default order be restored, depending on your environment setting (narrow bandwidth or broadband).

3

Video Codecs
Voice encoders/decoders (codecs) are activated and deactivated by enabling/disabling the corresponding checkboxes.

Depending on your preferences, you can set the priority for each codec by clicking at the buttons depicting arrows. Otherwise will your phone transmit the preferred codec order to the server and a suitable codec will be chosen to establish your call. By clicking at the “Reset to defaults” button will the default order be restored, depending on your environment setting (narrow bandwidth or broadband).

4

PBX hinter NAT / lokale IP
If a SIP server is located in the same network like the phone, than you select  „YES" in the Pulldown menu. That ensures, that the domain name or IP will be dissolved correctly.

PBX behind NAT/ local IP -> YES (activated)
The phone sends the local IP address fo the computer to the PBX. The PBX in the Local Area Network (LAN), sends data back to the receiced IP.

PBX behind NAT / local IP -> NO (deactivated)
The phone sends the public IP (internet connection) to the PBX. To receive the public IP a STUN server is needed (network settings). The PBX in the WAN (Internet) received and sends data packets to that public IP address. Here your Router nedds NAT support.

In a few cases it could be possible that it's needed to send local IP addresses (really rarely).

5

Use DNS

This function is preconfigured and shouldn't be changed. In case that the SIP service transmits its configuration data through SVR of the DNS protocol, this function can be used. In this case configuration is performed fully automatically. If the server does not support this feature, runtime problems are likely to occur.

6

Local call signal
Normally a VoIP PBX plays the "ringing" audio signal with an outgoing call. Anyways, in a  few cases the PBX doesn't play anything. Then you have the possibility to change the settings manually.

The default setting is "AUTO" and should not be modified because the phone decides automatically if it receives "early media" or not.

Change to "YES" if you want to emulate a local ringtone. Attention: In this mode you won't here any "early media" like annoucements for phone costs, etc.

Select "NO" to force only "early media" which is send by the PBX.

7

DTMF (Dual Tone Multiple Frequency)
Please select the dial tone setting that your SIP service is compatible with (default: Outband).

DTMF ist used for transmitting digits during a call (DTMF dialing, MFV).

Inband: DTMF-digits are transfered in the voice band (reliable over G.711).

Outband: DTMF-digits are transmitted outside the speech band by signaling  RFC 2833.

8

Video on Demand

By default, this function should be enabled and aims that the SIP server negotiates VIDEO support directly with the SIP account registration. Some services are requiring the renegotiation of VIDEO Codec support! In that case please set the value to "No".

IMPORTANT: An incorrect setting of 'Video on Demand' can occurs registration problems and errors during phone calls!

9

Individual ringtone (each SIP-Konto)

Enable the custom ringtone for the selected SIP account to give a musical score for incoming calls. By activation all ringtrones delivered by the PBX are  available (Alert-Info |*. WAV audio format).

10

Select an individual ringtone
Click at "..." to select an alternative URL or a local music file. Common *.wav files are supported. Is a file selected, it has always priority.