[*] Talk by Schulzrinne VoIP and IETF

[Bill Reid]

Unfortunately I only caught the last third of Dr. Henning Schulzrinne's talk. He 
was giving a presentation to the SIP Internet2 group via a conference call.

Since he is one of the original SIP protocol designers it was interesting to 
hear his comments.

There may be notes coming from the talk but here is a URL of the presentation
slides:

http://www.cs.columbia.edu/~hgs/papers/2007/internet2.ppt

He painted a kind of dismal picture of the IETF process. His summary slides on 
standards and IETF are worth a look.

He speaks of the "ossification of the Internet" which requires applications 
complexity.

Here is his summary slide of SIP issues:

- Basic interoperability is generally good
      - call setup/teardown
      - transfer
- Advanced features less so
      - e.g., bridged call appearance
- Configuration too painful
      - “out of the box experience”
- Unreliable (98 to 99.5% instead of 99.999%):
      - BGP disruptions
      - NAT problems
      - local interference
      - hard to tell what went wrong --> can’t prevent repeated problems     		 
       (“dentist problems”)

-- Bill