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Re: [sipcore] Comments on draft-ietf-sipcore-sip-push-04 - Timer triggered REGISTER requests

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 16 February 2018 06:35 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "Dale R. Worley" <worley@ariadne.com>
CC: "roman@telurix.com" <roman@telurix.com>, "Michael.Arnold@metaswitch.com" <Michael.Arnold@metaswitch.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Thread-Topic: [sipcore] Comments on draft-ietf-sipcore-sip-push-04 - Timer triggered REGISTER requests
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Date: Fri, 16 Feb 2018 06:35:01 +0000
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Subject: Re: [sipcore] Comments on draft-ietf-sipcore-sip-push-04 - Timer triggered REGISTER requests
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Hi,

>> That means the UA can send it's re-registration REGISTER whenever it 
>> wants, as long as it does it earlier than 10 seconds before the 
>> registration expires. We could make the number a little larger, 
>> though, e.g., 60 seconds.
>
> Clearly, we need input from people who are directly involved in the engineering of these systems to learn a good default value.

What I meant was that people will know what values to use when they deploy their networks.

>> But, if people want a way for the proxy to explicitly indicate the min 
>> value to the UA, we can for sure add e.g., a feature-capability 
>> indicator for that.
>
> I would expect it to be one of the pn-* parameters.

If the UA decides what the value shall be, then we could use a pn- parameter. But, the proxy should not modify the pn- parameters, as it would mess up the URI matching.

Regards,

Christer

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