Diego B wrote:
> Hi;
> Those are requirement from Service Providers.
> Just try to make a call from a Nokia E or N series using
> their SIP UA while note registered, just to name one UA.

IMS has this restriction. It sounds like these are designed to for that 
environment, not to be general purpose sip phones.

        Paul

> [EMAIL PROTECTED] wrote:
>>    From: Diego B <[EMAIL PROTECTED]>
>>
>>    It is not complicated but the client has to know if it registered or not.
>>    Some sip-phone wont let you make calls if they are not registered.
>>    Some sip-phones will not accept calls if they are not registered.
>>
>> Why would someone design a UA with such unnecessary restrictions?
>>
>> Dale
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> 
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