[Asterisk-Dev] TE410P B-channel restart

[CW_ASN]

Tilghman Lesher wrote:

>On Saturday 19 February 2005 22:42, CW_ASN wrote:
>  
>
>>Peter Svensson wrote:
>>    
>>
>>>On Thu, 17 Feb 2005, Ma Zhiyong wrote:
>>>      
>>>
>>>>Everything is OK except that I have found the spans restarted
>>>>once each hour.
>>>>
>>>>   Is this a timing problem? Thanks.
>>>>        
>>>>
>>>This is not a problem, or at least working as intended. Asterisk
>>>restarts all idle lines once an hour. This helps if the state
>>>machines on either end of the isdn link gets out of sync,
>>>thinking an idle line is not idle.
>>>      
>>>
>>The network side of ISDN restarts idle channels. CPE side never
>>initiate a restart. Asterisk should ignore the timer if is set as
>>CPE.
>>    
>>
>
>The spec (Q.931, page 45) clearly states otherwise:
>
>3.4.1 RESTART
>This message is sent by the user or network to request the recipient
>to restart (i.e. return to an idle condition) the indicated
>channel(s).  See Table 3-49.
>
>The table immediately following this explicitly shows that RESTART
>IEs may go in either direction, with the only exception being the
>Display IE (which is network-to-user only).
>
>  
>
As implemented in class 5 switches using EuroISDN, the restart initiated 
by cpe side is not allowed.