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Status: Verified (1)

RFC3108, "Conventions for the use of the Session Description Protocol (SDP) for ATM Bearer Connections", May 2001

Source of RFC: mmusic (rai)

Errata ID: 332

Status: Verified
Type: Technical

Reported By: Rajesh Kumar
Date Reported: 2002-05-22

Section 5.6 says:

   The base specification for SDP, RFC 2327 [1], allows the definition f
   new attributes.  In keeping with this spirit, some of the attributes
   defined in this document can also be used in SDP descriptions of IP
   nd other non-ATM sessions.  For example, the 'vsel', 'dsel' and
   'fsel' attributes defined below refer generically to codec-s.  These
   can be bed for service-specific codec negotiation and assignment in
   non-ATM s well as ATM applications.

It should say:

   The base specification for SDP, RFC 2327 [1], allows the definition of
   new attributes.  In keeping with this spirit, some of the attributes
   defined in this document can also be used in SDP descriptions of IP
   and other non-ATM sessions.  For example, the 'vsel', 'dsel' and
   'fsel' attributes defined below refer generically to codecs.  These
   can be used for service-specific codec negotiation and assignment in
   non-ATM as well as ATM applications.

Notes:

In Section 5.6.3: (First, Second and Third Bulleted items in List)
* The 'silenceSupp' attribute, used to indicate the use of of
voice activity detection for silence suppression, and to
optionally parameterize the silence suppression function.

* The 'ecan' attribute, used to indicate the use of of echo
cancellation, and to parameterize the this function.

* The 'gc' attribute, used to indicate the use of of gain
control, and to parameterize the this function.
Should be:
* The 'silenceSupp' attribute, used to indicate the use of
voice activity detection for silence suppression, and to
optionally parameterize the silence suppression function.

* The 'ecan' attribute, used to indicate the use of echo
cancellation, and to parameterize the this function.

* The 'gc' attribute, used to indicate the use of gain
control, and to parameterize the this function.
In Section 5.6.3.3:
When present, the 'ecan' attribute s is used to indicate the use or
non-use of echo cancellation. There can be several 'ecan' lines in
an SDP description.
Should be:
When present, the 'ecan' attribute is used to indicate the use or
non-use of echo cancellation. There can be several 'ecan' lines in
an SDP description.
In Section 5.6.6: (First numbered item)
(1) The originating media gateway controller (OMGC) initiates
service-level call establishment by sending the appropriate
controlsmessage to the originating media gateway (OMG).
Should be:
(1) The originating media gateway controller (OMGC) initiates
service-level call establishment by sending the appropriate
control message to the originating media gateway (OMG).
In Section 6: (Sixth definition from top)
<vci> Virtual Circui t Decimal or hex equivalent
Identifier of 16 bits
Should be:
<vci> Virtual Circuit Decimal or hex equivalent
Identifier of 16 bits


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