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Early offer and delayed offer

Delayed offer means the INVITE has no SDP. voice-class sip early-offer forced makes the outbound dial peer send an offer in the INVITE.

Learn in 5 minutes

  1. Define delayed offer
  2. State where RFC 3264 allows an offer
  3. Name the CUBE command that forces early offer

Visual

Delayed inbound, early outbound · study drawing · cyphermonkeylabs.com CUCMCUBECarrier INVITE 100 INVITE 200 200 ACK

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RFC 3264 allows the offer in the INVITE or in a reliable response.

Worked example

Read the forced offer The outbound early offer is ANCHOR_SDP. The carrier answer is CARRIER_SDP.

    Vendor menus, ports, and license names change. Confirm before relying on a sentence that is not an RFC.

    Fault

    The carrier rejects the call. The outbound INVITE matches the inbound one: no SDP.

    Content-Length 0 on that INVITE means no offer was sent.

    Quiz

    Delayed offer means


    RFC 3264 allows the offer in


    voice-class sip early-offer forced


    On the carrier leg in this lesson, SDP first appears in


    When the offer is in the 200 OK, the answer belongs in


    A reliable provisional offer depends on


    Ecosystem

    Glossary, sister systems, and the integration seam for this room.

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