The requiremnts and proposals for M2PA/M3UA/SCTP Extension from China Mobile

Dear Chairman and experts，

I am Chen Xu from China Mobile. We have some requirements and proposals for extensions of M3UA/M2PA/SCTP after widely using those protocols. 
  As you may know, China Mobile has built the largest soft-switch network in the world. More than 80 percent long-distance  voice traffic of our subscribers which is more than 300 millions are migrated to this network.
In this network, SIGTRAN is very important to China Mobile for it is not only widely used in the Nc interface to transport  BICC signaling and in the interface between MSC Server and embedded SG to transport access network signaling, but also used to the interface between IPSEPs/IPSTPs  in the signaling network.

For M3UA（RFC4666）,our requirement is to add the M3UA signalling network management function and procedure for using  in   IPSTP-IPSEP interface.

For M2PA（RFC4165）, our requirements are to supplement the description of the whole idea for Link Alignment procedure and  Processor Outage procedure，to give the definition and range of M2PA Timers, and to Supplement the rules of usage of FSN   and BSN in M2PA Header.

For SCTP（RFC4460）,our requirement is to supplement some rules for Multi-homing mechanism.

I have prepared the slides to describe the requirements and proposals of extensions for M3UA/M2PA/SCTP. Any advises and   comments would be appreciated. At the same time, I will finish the drafts within weeks. 

If you have further question, just send me ([email protected]) an e-mail. Also, My colleague, Mr. Duan Xiaodong  ([email protected]) is in the IETF69th meeting this week , maybe you’d like to talk with him face to face.
 
Wish you a nice week!
Looking for your reply!


Yours sincerely
Chen Xu
[email protected]

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