RFC 3320 (rfc3320) - Page 3 of 62
Signaling Compression (SigComp)
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RFC 3320 Signaling Compression (SigComp) January 2003 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, RFC 2119 [RFC-2119]. Application Entity that invokes SigComp and performs the following tasks: 1. Supplying application messages to the compressor dispatcher 2. Receiving decompressed messages from the decompressor dispatcher 3. Determining the compartment identifier for a decompressed message. Bytecode Machine code that can be executed by a virtual machine. Compressor Entity that encodes application messages using a certain compression algorithm, and keeps track of state that can be used for compression. The compressor is responsible for ensuring that the messages it generates can be decompressed by the remote UDVM. Compressor Dispatcher Entity that receives application messages, invokes a compressor, and forwards the resulting SigComp compressed messages to a remote endpoint. UDVM Cycles A measure of the amount of "CPU power" required to execute a UDVM instruction (the simplest UDVM instructions require a single UDVM cycle). An upper limit is placed on the number of UDVM cycles that can be used to decompress each bit in a SigComp message. Decompressor Dispatcher Entity that receives SigComp messages, invokes a UDVM, and forwards the resulting decompressed messages to the application. Price, et. al. Standards Track
