Howto:Siemens optiPoint 410 standard - SIP Testreport
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- Very good interoperability.
- Any kind of media negotiation and re-negotiation is supported by the optiPoint.
- Hold and Retrieve is working with the optiPoint.
- Name Display is working on inbound and outbound calls.
- RTP-DTMF is working (e.g. IVR system can be controlled).
Problems:
- Bad audio quality when receiving 60ms RTP audio packets.