Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP)
Confusion; Situational Awareness; Workload
ATC Issue All Types; Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural Clearance
Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors
Center assigned (not charted) crossing restriction with inadequate time to prepare. To the best of my recollection; we were given about 10 miles to program a relatively complicated restriction into the FMS which then indicated an unacceptably high rate of descent would be necessary. I made two radio calls informing ATC that we would be unable to comply prior to reaching the problematic fix. No response was received.
The CRJ-700 Captain was unable to comply with a crossing restriction which was issued late by ATC.