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Sip Phone Plugin Performance


I want to use the Sip Phone plugin, but the outgoing soundqaulity ist very bad. It’s lagging and unclear… the incoming sound ist perfekt.

With other apps like Phonerlite everything is good. QoS is for Port 5060 at the router aktivated.

Has someone an idea?

Sorry for bad english.



which version of Spark,System,Codec and PBX do you use?

Openfire 3.6.4/Spark 2.5.8 / Windows XP SP3/ i dont know which coded is used by Spark The Sip Provider is bellshare.de/

Please test it again this with the latest version from the svn:


now both hear nothing…