Comments
Yes 480 is a response code sent to SIP network in general.
Posted by HamidAliKhan
480 is a response code sent to SIP network.
Posted by Hash007
Timer T9 expires
This indicates that the ANM has not arrived in time specified. This results in the call being aborted. All the resources related to the media path are released. A `480 temporarily unavailable' is sent to the SIP network. A REL message with cause value 19 (no answer from the user) is sent to the ISUP part. The PSTN responds with RLC and the SIP network responds with an ACK indicating that the release
sequence has been completed.
Posted by sagitraz
480 Temporarily Unavailable' response code SHOULD be sent to the SIP network, and an REL message with cause value 19 (no answer from the user) SHOULD be sent to the ISUP network. The PSTN can be expected to respond with an RLC and the SIP network to respond with an ACK indicating that the release sequence has been completed.
Posted by jcelso
Timer T9 expires
This indicates that the ANM has not arrived in time specified.
This results in the call being aborted. All the resources related
to the media path are released. A `480 temporarily unavailable'
is sent to the SIP network. A REL message with cause value 19 (no
answer from the user) is sent to the ISUP part. The PSTN responds
with RLC and the SIP network responds with an ACK indicating that
the release sequence has been completed.
Posted by avloginov
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