Is the call to prayer with two adhan for the Fajr prayer prescribed?

Question:
Fajr has two adhan. Is that an obligatory sunnah, or a recommended one? Is that in Ramadan, or in all months of the year, and what are their times?

Answer:
The obligatory is only the adhan, one adhan. As for the second adhan, it is recommended if the need calls for it. It is not recorded that the Prophet (peace and blessings be upon him) did it except in Ramadan. Bilal would call the adhan to wake the sleeper and alert the one who is standing a little before Fajr, and it is not recorded from him (peace and blessings be upon him) in other than Ramadan.
However, some of the scholars recommended it absolutely for the purpose of alerting; because it alerts the appearance of Fajr so that people prepare for Fajr, and the one who fasts fasts, and otherwise the matter is broad in it. The obligatory is only the adhan of Fajr, as for the first one, it is not obligatory; rather, it is recommended if the need calls for it.