Technical Summary
This document defines a Media Gateway Control Protocol (MGCP)
package to support fax calls. The package allows for fax calls to
be supported in two different ways. The first one utilizes ITU-T
Recommendation T.38 for fax relay under the control of the Call
Agent. The second one lets the gateway decide upon a method for fax
transmission as well as handle the details of the fax call without
Call Agent involvement.
Working Group Summary
Not WG Document.
Document Quality
Joe Stone provided expert review.
Personnel
Cullen Jennings is AD for this document.
RFC Editor Note
Please change all occurrences of "whatever.net" to "example.net"
Section 2.5.2
OLD
The attribute "T38MaxBitRate" is incorrectly registered with IANA as
NEW
The attribute "T38MaxBitRate" was once incorrectly registered with IANA
as
Section 2.1.2, 1st paragraph
OLD:
However, in order to use any special fax
handling, support for it MUST be negotiated with the other side by
passing and recognizing relevant parameters via the
LocalConnectionDescriptor and RemoteConnectionDescriptor.
NEW:
However, in order to use any special fax
handling, support for it MUST be negotiated with the other side by
passing and recognizing relevant parameters via the
LocalConnectionDescriptor and RemoteConnectionDescriptor (this
includes the use of RTP-based T.38).
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Section 2.1.3, 1st paragraph
OLD:
However, the gateway
may still adjust local echo cancellation and/or switch to an
alternative codec as needed (in particular, this does not preclude the
use of RTP-based T.38).
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
NEW:
However, the gateway
may still adjust local echo cancellation and/or switch to an
alternative codec as needed.
Section 6, beginning:
ADD:
Changes since -08
* RTP-based T.38 disassociated with the Off procedure and
re-associated with the Gateway procedure. WARNING: This may
impact existing Call Agent and Gateway RTP-based T.38
implementations.