[Asterisk-Users] Sometimes yes - sometimes no (dialplan)

[Robert Goodyear]

>>>>> I am confused about one of my installed server
>>>>>
>>>>> The dial plan seems to be ok, but sometimes NOTHING happens if I 
>>>>> try to dial an extension (from X-Lite), next time it is done.
>>>>>
>>>>> X-Lite does not have a tone, nothing and does also have no time 
>>>>> out. It seems it is not connected to the server. However, a sip 
>>>>> show users / sip show peers   shows that the phone is connected.
>>>> SIP clients generate their own dialtone, so if you've got no tone, 
>>>> that sounds suspicious of a problem with the client itself. I 
>>>> assume you've debugged the problem by registering a hard SIP client 
>>>> on that server?
>>> The CLI prompt does not show anything either. It is like the phone 
>>> is not talking to asterisk at all.
>>> sip show users/peers   does show the phone.
>> ...shows the phone REGISTERED, yes?
> yes!!!

...yet no other information in the CLI or logs? C'mon, help us help 
you. The clue is in the question.