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Polycom SIP 3.1 Speaker System User Manual

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Session Initiation Protocol (SIP)

B - 5

Diversion Yes

Error-Info No

Event Yes

Expires Yes

From Yes

In-Reply-To No

Max-Forwards Yes

Min-Expires No

Min-SE Yes

MIME-Version No

Organization No

P-Asserted-Identity Yes

P-Preferred-Identity Yes

Priority No

Proxy-Authenticate Yes

Proxy-Authorization Yes

Proxy-Require No

RAck Yes

Record-Route Yes

Refer-To Yes

Referred-By Yes

Remote-Party-ID Yes

Replaces Yes

Reply-To No

Require Yes

Retry-After No

Route Yes

RSeq Yes

Server No

Session-Expires Yes

Header Supported Notes

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