[SIPForum-techwg] SIP phone task group; revisiting group scope / activity

[peter_blatherwick at mitel.com]

Hi Jay, all, 

While I agree there is a lot that could go in parallel with SIPPING 
completion of the SIP Config Framework, I don't think we could actually be 
done on the SIP Forum Phone doc without it.  It's still a little early to 
tell how long it will really take to finally finish the Config Framework 
itself, and data formats are also needed beyond that, which are less 
progressed.  Hence, I think we may be able to get restarted to a degree on 
the SIP Forum document, but we would still have a hard time setting 
timetables. 

My take is we should consider a re-start on the SIP Forum document when it 
becomes a little more clear on the Config Framework.  That seems like we 
should have a better feel fairly early in the new year, maybe Feb or so. 

Regardless, I will certainly contribute to the SIP Forum efforts on this 
front!  (And am already doing so on the Config Framework front too BTW.) 

Cheers,
Peter Blatherwick






Jay Batson <batsonjay at mac.com>
Sent by: techwg-bounces at sipforum.org
14.12.06 08:45
 
        To:     SIP Forum Tech WG <techwg at sipforum.org>
        cc: 
        Subject:        [SIPForum-techwg] SIP phone task group; revisiting 
group scope / activity


All --

When the original SIP Phone Task Group meeting was held about a year 
ago, the following items were listed by Rohan (and Francois) as 
specific objectives of the Task Group:

- Specify DHCP, DNS, ENUM, Network configuration, software upgrades, 
configuration and management requirements
- Specify SIP protocol feature requirements (MWI, Caller ID, 
Transfer, etc.)
- Specify Numbering and Dialing Plan requirements
- Specific Presence and Instant Messaging requirements
- Specify Emergency, Security, QoS, Media, Codec requirements
- Specify NAT Traversal requirements
- Specify other requirements as necessary

Francois' notes after the meeting recorded the following other items 
of interest from the kickoff meeting:
- We should focus on obviously on SIP aspects for Interop.
- We may refer to other documents (such as the TIA document) for 
other complementary aspects (acoustics, etc.). No need to reinvent 
the wheel.
- Layer 2/Layer 3 aspects are not in scope (i.e., we won't specify 
how to support an IP stack, or Ethernet). However, configuration of 
layer 2 or layer 3 parameters such as Diffserv codpoints on devices 
is in scope.
- We should not forget features that are not traditional "telephony" 
features, but which make SIP so attractive:
-- Presence, Instant messaging.
-- Even devices with limited capablities (like no screen) should be 
able to play nice by publishing presence state for example.
- Lots of talk about NOT defining "profiles" that define the phones 
themselves (not to repeat past mistakes). We should instead define 
profiles for certain types of features (e.g, for basic telephony, for 
presence, for instant messaging, for NAT traversal, etc.).

Other relevant progress came from stuff by Markus Isomaki from Nokia 
(here and here), who was trying to write some stuff down.

Since the last real work that was done in this Task Group, a couple 
of IETF activities have tried to take a stab at configuration-related 
items.  It probably makes sense, therefore, to hold off on additional 
configuration-related work in the SIP Phone Task Group to see what 
comes out of the IETF.

However, what do people think about continuing the work on the other 
items?  And knowing what we know now, have we listed "enough" other 
items?  The basic underlying question is this:  is there effective 
work we can do in the SIP Phone Task Group while the IETF is still 
hashing out configuration-related drafts?

IMHO, in reviewing the list archives, I think there's plenty that can 
go on in parallel with the config stuff at the IETF.  But we need to 
restart a conversation, and (potentially) find people who are willing 
to be co-scriveners.

Comments, people, please?
-jb

-----------------
Jay Batson
batsonjay at mac.com
+1-978-824-0111 (w)
+1-978-758-1599 (m)


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