[nsp] Q.931 timers

[Blaz Zupan]

Does anybody have a copy of ITU-T standard Q.931 handy? I don't really feel
like shelling out 125 swiss francs just to take a short look at it.

The reason I'm asking is that I'm getting "recovery on timer expiry" errors on
outgoing calls from an AS5300 running 12.2(16a) IOS on a NET-5 PRI ISDN line.
The calls are destined to mobile phones. A look at the "debug isdn q931"
output reveals that the error is always generated exactly 60 seconds after the
CALL_PROC. A look at "show isdn timers" reveals that *none* of the ISDN layer
2 or layer 3 timers is set to 60 seconds. The only timers that can actualy be
changed (as far as I can see) are T310 and T306, the only relevant timer in
this situation is T310. I've tried setting it to 120 seconds (it was set to 40
seconds), but the recovery on timer expiry still appears exactly 60 seconds
after the CALL_PROC. I'm trying to find out which Q.931 timer is by default or
by standard set to 60 seconds to be able to further debug this.

The only relevant page on www.cisco.com that I was able to find did not really
help me in this situation (as I said, changing T310 does not help and I
already have "isdn sending-complete" configured):

http://www.cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a0080094487.shtml

Here's what my "show isdn timers" has to say:

    ISDN Serial2:15 Timers (dsl 2) Switchtype = primary-net5
        ISDN Layer 2 values
         K     =   7 outstanding I-frames
         N200  =   3 max number of retransmits
         T200  =   1.000 seconds
         T202  =   2.000 seconds
         T203  =  10.000 seconds
        ISDN Layer 3 values
         T303  =   4.000 seconds
         T304  =  30.000 seconds
         T305  =  30.000 seconds
         T306 =  30.000 seconds
         T307 = 180.000 seconds
         T308  =   4.000 seconds
         T309    Disabled
         T310 =  40.000 seconds
         T313 =   4.000 seconds
         T316  = 120.000 seconds
         T318  =   4.000 seconds
         T319  =   4.000 seconds
         T322  =   4.000 seconds
         T3OOS =   5.000 seconds
         TGUARD=   8.000 seconds, Expiry = REJECT_CALL

Thank in advance for any help you can offer.