Settings

All settings can be accessed by clicking on the settings icon.

Global settings

global settings

Setting	description
Audio frame package time:	The internal package time of the audio processing engine
Buddy precence refresh time:	this defines how often a buddy gets refreshed. Each buddy refresh means a SIP message to each contact.
Call disconnect after RX lost:	After this time (in seconds) the codec terminates an active call as soon as no more RTP packets are received. This terminates orphaned connections. 0 disables this function.
Log level:	Select the desired log level with this drop down menu. For production use 3 or smaller is recommended.
Log path:	choose a location where the log files schould be written to. Only the last 50 log files are kept.
Max Calls:	The maximum simultaneous calls.
Max call duration:	All calls can be limited to a maximum call duration (set in minutes). A call gets automatically terminated if it exceeds this duration. A value of 0 turns this feature off.
Router max channel:	this sets how many channel an account will have. (1 = mono, 2 = stereo)

SIP settings

SIP settings

Setting	description
Account session timer expiration	Default session interval for Session Timer (RFC 4028) extension, in seconds.
ICE	enable or disable Interactive Connectivity Establishment (ICE) rfc5768
ICE Rtcp	enable ore disable RTCP component.
ICE agressive nomination	enable or disable agressive nomination
ICE always update	Always send re-INVITE/UPDATE after ICE negotiation regardless of whether the default ICE transport address is changed or not. When this is disabled, re-INVITE/UPDATE will be sent only when the default ICE transport address is changed.
ICE max host candidates	Set the maximum number of ICE host candidates.
ICE nominated check delay	For controlling agent if it uses regular nomination, specify the delay (in milliseconds) to perform nominated check
ICE nomination timeout	For a controlled agent, specify how long it wants to wait (in milliseconds) for the controlling agent to complete sending connectivity check
Media config transport port	this sets the UDP port for the media to flow
NAT hole punching keep alive timer	Set the interval for periodic keep-alive transmission for every account. If this value is zero, keep-alive will be disabled.
auto registration retry upon registration failure	Specify interval of auto registration retry upon registration failure (including caused by transport problem), in second. Set to 0 to disable auto re-registration. Note that if the registration retry occurs because of transport failure, the first retry will be done after first retry interval instead.
interval for the first registration retry	This specifies the interval for the first registration retry.
rewrite contact in SIP header	This option is used to update the transport address and the Contact header of REGISTER request. When this option is enabled, the library will keep track of the public IP address from the response of REGISTER request. Once it detects that the address has changed, it will unregister current Contact, update the Contact with transport address learned from Via header, and register a new Contact to the registrar. This will also update the public name of UDP transport if STUN is configured.
rewrite via in SIP header	This option is used to overwrite the “sent-by” field of the Via header for outgoing messages with the same interface address as the one in the REGISTER request, as long as the request uses the same transport instance as the previous REGISTER request.

Audio settings

audio settings

Setting	description
echo canceller tail length	Echo canceller tail length, in miliseconds. Setting this to zero will disable echo cancellation.
Jitterbuffer initial prefetch delay	Jitter buffer minimum prefetch delay in msec.
Jitterbuffer max	Set maximum delay that can be accomodated by the jitter buffer msec.
Jitterbuffer prefetch Max	Jitter buffer maximum prefetch delay in msec.
Jitterbuffer prefetch Min	Jitter buffer minimum prefetch delay in msec.
Router clock rate	Sets the clock rate of the audio routing matrix
Router clock source	select from wich audio interface the router schould take the clock, or set to internal clocking if no audio interface is connected.
Sound device clock rate	Sets the clock rate of the selected audio interface
Sound device plackback buffer	sets the playback buffer in milliseconds for the sound device
Sound device record buffer	sets the record buffer in milliseconds for the sound device

Codec Priority

Set the priority for each available codec. If an incoming call has multiple codecs offered in the SDP the codec with the highest priority will be selected. If a codec is set to 0 disabled a call with this codec will be refused.