Avaya Configuring Data Compression Services User Manual download pdf (Page 38)

Configuring Data Compression Services

2-8

117352-D Rev. 00

How Data Compression Works

To transmit compressed data, the router must complete one or both of the

following:

• CCP negotiations (for PPP connections using WCP or Hi/fn LZS)

• WCP negotiations (for PPP, frame relay, and X.25 connections using WCP)

The following sections describe how these negotiations work. As you read these

sections, see Figure 2-1

, which illustrates CCP and WCP initialization on a PPP

link.

If compression is across a frame relay or X.25 link, the router negotiates only

WCP; CCP does not apply.

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Avaya Configuring Data Compression Services User Manual Page 38