In both directions or only in one direction?

You can use ethereal to capture the RTP streams and save them to disc (can help you to find out if the problem is at the sender or at the receiver). Take a look at the RTP headers and the used codec. Try to disable some codec or change the preferrences of the codec.

regards, Klaus

-----Original Message----- From: Mario Kolberg [mailto:mko@cs.stir.ac.uk] Sent: Thursday, December 04, 2003 3:58 PM To: serusers Subject: [Serusers] xten and Mitel 5055

Hi,

apologies for using this email list for something which is not directly linked to ser.

I'm having a weird problem when setting up a voice connection between an Xten X-Lite UA and a Mitel 5055 SIP phone (connected via a ser proxy server). The session initiation is all fine, but the media session is not - the voice transmitted sounds a bit like a robot and is impossible to understand. I assumed this is a codec problem but strangly this problem ONLY occurs between the Xten UA and the Mitel phone. It does not occur between Xten and a Pingtel phone nor between Mitel 5055 and Pingtel, nor between Ubiquity UA and Mitel 5055. As far as I know all use the G711 codec.

Has anybody experienced this problem also?

Thank you for your help. Mario Kolberg

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