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Liaison statement
ASON Recommendations

State Posted
Submitted Date 2006-02-24
From Group ITU-T-SG-15
From Contact Greg Jones
To Groups ccamp, pce
To Contacts Kireeti Kompella <>
Adrian Farrel <>
JP Vasseur <>
Cc Scott Bradner <>
Bill Fenner <>
Alex Zinin <>
Response Contact ITU-T SG15 Secretariat <>
Technical Contact Hing-Kam Lam <>
Malcolm Betts <>
Purpose For information
Attachments TD212R1/P SG15 (G.8080 Revision)
TD216R1/P SG15 (G.7713 Revision)
TD214R1/P SG15 (New Appendix VI of G.7714.1)
At the recent SG15 meeting, several ASON Recommendations were revised.  As IETF
CCAMP and PCE WGs have interests in control plane technology for transport
networks, this update is provided to continue collaborative work. Q12/15 has
developed a Revision to the ASON architecture Recommendation G.8080/Y.1304. 
This Revision combines Amendments 1 and 2, and adds additional material on
terminology, multi-layer aspect, naming, and more examples of component
interaction.  As a result of an earlier liaison received from IETF, the routing
component interface now accommodates the PCE architecture.  Please note that
the requirements of the G.807/Y.1302, “Automatic Switched Transport Network
requirements�, have been incorporated into G.8080/Y.1304 and that
G.807/Y.1302 is superseded. Q14/15 has developed a Revision to Recommendation
G.7713/Y.1704, “Distributed Call and Connection Management� (signalling). 
This revision combines Amendment 1 and adds material on restoration, Soft
Permanent Connection service, and signalling controller resilience. 
Requirements for crankback were not included and we continue to work on them.
Q14/15 has also developed an Appendix on “Usage of the Different Discovery
Mechanisms� to Recommendation G7714.1, “Protocol for automatic discovery in
SDH and OTN networks�.  This appendix provides clarification of the network
scenarios under which the various discovery mechanisms described in the main
body of the Recommendation may be utilized.  G.7714 and G.7714.1 pertain to
discovery in the transport plane. We look forward to continuing work with IETF
on ASON related topics. An electronic copy of this liaison statement is
available at:

-       TD212R1/P SG15 (G.8080 Revision)
-       TD216R1/P SG15 (G.7713 Revision)
-       TD214R1/P SG15 (New Appendix VI of G.7714.1)