On 10/11/2010 03:46 AM, Stefan Sayer wrote:
If you read 7.4 sixth paragraph in rfc4028 again, you'll see that it is always relative to the current request. In fact it is RECOMMENDED that sems adds refresher=uac in order to not swap roles (but then it should also add Require: timer). Actually, for sst b2b it may be desirable to try to swap roles to have the refresh going e2e instead of originated from the middle.
Does it really matter in this case, given that one of the endpoints (the terminating PSTN_GW) does not support timers?
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