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-== User-Plane Traffic via RTP
-
-RTP (Realtime Transfer Protocol) is a protocol for streaming audio
-and video data. It is specified by IETF RFC 1889.
-
-OsmoBTS A-bis/IP implements RTP as transport medium for circuit-switched
-user-plane traffic, contrary to the E1 sub-slot based transport
-specified in 3GPP TS 08.60.
-
-The RTP transport endpoint parameters are configured using the RSL User
-Plane Transport Management procedures described in <<user_plane_txp_mgmt>>.
-
-RTCP is implemented in addition to RTP, on a UDP port number of the RTP
-port incremented by one.
-
-=== RTP Payload Formats
-
-The RTP payload format depends on the voice codec used on the radio
-channel. The OsmoBTS is simply passing the GSM speech frames between
-the Um radio interface channels and the RTP payload (and vice-versa).
-
-No transcoding function is implemented in the BTS!
-
-.RTP Payload formats
-[options="header",width="60%",cols="15%,15%,70%"]
-|===
-| TCH | Codec | RTP payload format specification
-| TCH/F | FR | IETF RFC 3551 Section 4.5.8
-| TCH/F | EFR | IETF RFC 3551 Section 4.5.9
-| TCH/F | AMR | IETF RFC 4867
-| TCH/H | HR | IETF RFC 5993
-| TCH/H | AMR | IETF RFC 4867
-|===