User's Manual

Table Of Contents

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Before doing this please ensure the extension uses a strong password.

 Simultaneous Register Count: The extensions could be registered on up to 5 different SIP endpoints at the

same time, by default the value is 2. When there are already 2 registers the 3

with a 403 error.

 Video Call: You may enable/disable video call support of this extension.

 Video Codecs: Supported video codecs are H.261, H.263, H.263+, H.264, VP8.

 Web Portal: If enabled, users can use their extension number and password to login to the IPPBX system web

GUI.

 Call Recording: This is an automated recording option, you may choose to automatically record the inbound,

outbound or both inbound and outbound calls from/to this extension.

 Call Spy: Call Spy feature allows the phone calls of this extension to be monitored from other extensions,

please refer to Call Spy Feature Codes for how to monitor phone calls.

 Register Expiration: Default register expiration time, default value 120 seconds.

 Transport Protocol: The transport protocol to be used by SIP signaling. By default it uses UDP protocol, if you

choose to use TCP or TLS please make sure the SIP IP phone or softphone uses the same protocol. Otherwise

you’ll get “403” error on SIP register.

 DTMF Mode: Defines how the system detects DTMF tones, the default setting is RFC4733, it can be changed

if necessary.

 SRTP: Secure Real-time Transport Protocol (SRTP) encrypts the RTP traffic to secure your VoIP phone calls.

Before enabling this option you need to ensure the SIP endpoint can also support SRTP.

 Qualify: The IPPBX system sends a SIP OPTIONS command regularly to check that the device is still online.

 NAT: Enable this option if extension user or the phone is behind a router.

 Audio Codecs: PLANET IPPBX system supported audio codecs such as G.711 (ulaw, alaw), G.722, G.726, G.729,

GSM, Opus and Speex. The sequence of the audio codecs listed here is the sequence of the audio codecs to

be used for negotiating the media of a phone call to be established.