- response to STATUS INQUIRY.This cause is included in the STATUS message when the reason for generating the STATUS message was the prior receipt of a STATUS INQUIRY.Cause No. 31 - normal. unspecified.This cause is used to report a normal event only when no other cause in the normal class applies.Cause No. 34 - no circuit/channel available.This cause indicates that there is no appropriate circuit/channel presently available to handle the call.What it means:There is no place on the Public Telephone network to place the call; the call never gets to its destiation. This is usually a temporary problem.Cause No. 35 - Call Queued.Cause No. 38 - network out of order.This cause indicates that the network is not functioning correctly and that the condition is likely to last a relatively long period of time e.g., immediately re-attempting the call is not likely to be successful.Cause No. 39 - permanent frame mode connection out-of-service.This cause is included in a STATUS message to indicate that a permanently established frame mode connection is out-of-service (e.g. due to equipment or section failure)Cause No. 40 - permanent frame mode connection operational.This cause is included in a STATUS message to indicate that a permanently established frame mode connection is operational and capable of carrying user information.Cause No. 41 - temporary failure.This cause indicates that the network is not functioning correctly and that the condition is no likely to last a long period of time; e.g., the user may wish to try another call attempt almost immediately.What it means:This means that there is a temporary failure at the physical layer on the ISDN network. If you remove the ISDN cable from the Netopia, you would see this. It's usually temporary.Cause No. 42 - switching equipment congestion.This cause indicates that the switching equipment generating this cause is experiencing a period of high traffic.What it means:Just too much going on at this point on the ISDN network to get the call through to its destination.Cause No. 43 - access information discarded.This cause indicates that the network could not deliver access information to the remote user as requested. i.e., user-to-user information, low layer compatibility, high layer compatibility or sub-address as indicated in the diagnostic. It is noted that the particular type of access information discarded is optionally included in the diagnostic.Cause No. 44 - requested circuit/channel not available.This cause is returned when the circuit or channel indicated by the requesting entity cannot be provided by the other side of the interface.Cause No. 46 - precedence call blocked.This cause indicates that there are no predictable circuits or that the called user is busy with a call of equal or higher preventable level.Cause No. 47 - resource unavailable, unspecified.This cause is used to report a resource unavailable event only when no other cause in the resource unavailable class applies.Cause No. 49 - Quality of Service not available.This cause is used to report that the requested Quality of Service, as defined in Recommendation X.213. cannot be provided (e.g., throughput of transit delay cannot be supported).Cause No. 50 - requested facility not subscribed.This cause indicates that the