Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Troubleshooting; Workload; Confusion; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Ramp
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented
Airport; Chart Or Publication; Environment - Non Weather Related
After landing at MIA we were assigned to taxi to Gate G5; which was not depicted on the chart. We could not see where Gate XX was since it had no jetbridge; and the last gate we could see with a jetbridge was XY. After coordinating with Ground Control we stopped on Taxiway Sierra and coordinated with Operations to have a Marshaler come out at the beginning of the J-line so we could see the gate. We then realized the XX was a remote gate with no jetway or signage except lettering at the top of the J-line; which you could only see as you got close. We then asked Ground Control and were cleared to the gate; but neglected to call Ramp Control until queried by Ground Control. We contacted Ramp Control and were then cleared to the gate. Both the FO and I were unfamiliar with MIA and first time for me landing there.Operations could not describe the location of XX to us; so that's why we had them send a Ground Marshal to the top of the J-line. We could have paid attention to the airport information page which lists ramp control frequencies.
Taxiing in to a hard stand that was not charted on either our airport pages; requested assistance in locating our gate with Ground. They attempted to help us but we were unable to locate our gate. We received confirmation of our gate location with Company Operations then queried Ground if we could taxi to the gate. Ground gave us permission and we entered the alley and proceeded to our gate. At that time Ground informed us that we needed to immediately call gate services; which we did; however; we were already in the alley and had failed to receive permission. Gate informed us that we should have called prior to entering the alley. We apologized and taxied to parking.
Air carrier Captain reported the taxi charts and ground markings for the assigned gate in MIA were not available and poorly marked.