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When RTP proxy is enabled and properly configured, SIP signaling is processed by the SBC 1000/2000 the
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- Use RTP Proxy Mode when the two endpoints use a codec which is not supported by the SBC.
- Proxy Mode permits the endpoints to directly negotiate the codec between themselves without the SBC interfering. In other words, if the endpoints would be able to make a direct call to each other, then RTP Proxy Mode should permit the endpoints to make a call through the SBC.
- Proxy Mode permits the endpoints to directly negotiate the codec between themselves without the SBC interfering. In other words, if the endpoints would be able to make a direct call to each other, then RTP Proxy Mode should permit the endpoints to make a call through the SBC.
- Proxy Mode may also be used in cases where the SBC does support the codecs used by the two endpoints.
- Calls in Proxy Mode will not receive transcoding, ringback, or music-on-hold support from the SBC. These features require a DSP.
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It is advisable to use DSP mode when the call codec is one which is supported by the SBC. Doing so will decrease installation and interoperability problem. |
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Do not use Proxy Mode for Lync calls. Lync calls require that the SBC provide ringback. |
Advantages of Using RTP Mode
- Allows the SBC to establish calls for codecs that it does not support.
- Improves the calls per second (CPS) of SBC 1000/2000.
- RTP Proxy calls use use no DSPs or SDP licenses.
- Improves call quality.
- Reduces internal call processing.
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DSP vs. Proxy in the Call Route
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Overview
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