MOR application saves hangupcause codes (HGC in MOR terminology) to the database, so it is easy to check what the error was and why the call failed.

These codes can be seen in the Calls window (Hangup Cause column) when selected to show 'All', 'Busy', 'No Answer', 'Failed' or 'Missed' calls.

Standard codes

Code	Cause
34	no circuit/channel available

MOR specific codes

Code	Cause
200	MOR can't determine who is calling
201	User is blocked
202	Reseller is blocked
203	No rates for User
204	No suitable providers found
205	MOR PRO not authorized to work on this computer
206	server_id is not set in mor.conf file - this error code is not used anymore
207	Not clear who should receive call
208	MOR can not make more calls
209	Test time exceeded
210	Balance more than 0, but not enough to make call 1s in length
211	Low balance for user
212	Balance too low for more simultaneous calls
213	Low balance for DID owner
214	DID owner's balance is too low to make more simultaneous calls
215	Low balance for reseller
216	Reseller's balance is too low to make more simultaneous calls
217	Callback not initiated because device not found by ANI
218	Reseller does not allow loss calls
219	DID has reached call limit. No more calls allowed to this DID
220	User call limit reached
221	Device call limit reached
222	Resellers call limit reached
223	Providers call limit reached
224	Provider skipped because his rate is higher than user's rate
225	CallerID is banned
226	DID is free
227	Calling Card PIN is not entered
228	Calling Card Destination is not entered
229	DID is reserved
230	Connection returned error code 0 instead of real code
231	Provider unreachable - this error code is not used anymore
232	Callback DID not available
233	Skype Addon Disabled
234	Internal Loop
235	Providers rate higher by percent
236	Callback initiation too early

This table describes which standard ISDN code is MOR giving when one or another hangupcause is given.