New subject: LAPDm bug: How to exit LAPDm_STATE_TIMER_RECOV state

25 Oct 2010

...
  The timer recovery condition is only cleared if the
data link layer
 entity receives a valid supervisory frame response
 with the F bit set to "1". If the N(R) of this received supervisory
 frame is within the range from its current state variable
 V(A) to its current send state variable V(S) inclusive, it shall set
 its send state variable V(S) to the value of the received
 N(R). Timer T200 shall be reset if the received supervisory frame
 response is an RR or REJ response with F bit set to
 "1". The data link layer entity shall then resume with I frame
 transmission or retransmission, as appropriate.
 Timer T200 shall be set if the received supervisory response is an RNR
 response, and the data link layer shall proceed
 with the enquiry process in accordance with subclause 5.5.5. 
hi sylvain,

you are right. in case of an RR "response" (or an I frame) with the F
bit set to "1", there is no clearing of the "timer recovery state".
in
other cases (RNR, REJ) it is handled.

i would like to test this with a prepared frame drop tonight. if this
works, i will commit it.

regards,

andreas

AW: LAPDm bug: How to exit LAPDm_STATE_TIMER_RECOV state