A distributed antenna system comprising: a first digital base station network interface unit (102, 102E, 102F, 102G, 102H) configured to receive first downlink digital signals from a first external device (108, 108E, 108F, 108G, 108H) external to the distributed antenna system and to convert the first downlink digital signals into a first downlink data stream; a second digital base station network interface unit (102, 102E, 102F, 102G, 102H) configured to receive second downlink digital signals from a second external device (108, 108E, 108F, 108G, 108H) external to the distributed antenna system and to convert the second downlink digital signals into a second downlink data stream; a first remote antenna unit communicatively coupled to the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) and configured to receive at least one of the first downlink data stream from the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) and a first downlink signal derived from the first downlink data stream; the first remote antenna unit having a first radio frequency converter configured to convert at least one of the first downlink data stream and the first downlink signal derived from the first downlink data stream into a first radio frequency band signal and a first radio frequency antenna configured to transmit the first radio frequency band signal to a first subscriber unit; and wherein the distributed antenna system is configured to transmit a master reference clock to the first external device (108, 108E, 108F, 108G, 108H) through the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) by being configured to transmit first uplink digital signals to the first external device (108, 108E, 108F, 108G, 108H) through the first digital base station network interface unit (102, 102E, 102F, 102G, 102H), wherein the first uplink digital signals are clocked using the master reference clock such that the master reference clock is embedded in the first uplink digital signals; and wherein the first external device (108, 108E, 108F, 108G, 108H) is configured to lock its clock to the master reference clock embedded in the first uplink digital signals. a first digital base station network interface unit (102, 102E, 102F, 102G, 102H) configured to receive first downlink digital signals from a first external device (108, 108E, 108F, 108G, 108H) external to the distributed antenna system and to convert the first downlink digital signals into a first downlink data stream; a second digital base station network interface unit (102, 102E, 102F, 102G, 102H) configured to receive second downlink digital signals from a second external device (108, 108E, 108F, 108G, 108H) external to the distributed antenna system and to convert the second downlink digital signals into a second downlink data stream; a first remote antenna unit communicatively coupled to the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) and configured to receive at least one of the first downlink data stream from the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) and a first downlink signal derived from the first downlink data stream; the first remote antenna unit having a first radio frequency converter configured to convert at least one of the first downlink data stream and the first downlink signal derived from the first downlink data stream into a first radio frequency band signal and a first radio frequency antenna configured to transmit the first radio frequency band signal to a first subscriber unit; and wherein the distributed antenna system is configured to transmit a master reference clock to the first external device (108, 108E, 108F, 108G, 108H) through the first digital base station network interface unit (102, 102E, 102F, 102G, 102H) by being configured to transmit first uplink digital signals to the first external device (108, 108E, 108F, 108G, 108H) through the first digital base station network interface unit (102, 102E, 102F, 102G, 102H), wherein the first uplink digital signals are clocked using the master reference clock such that the master reference clock is embedded in the first uplink digital signals; and wherein the first external device (108, 108E, 108F, 108G, 108H) is configured to lock its clock to the master reference clock embedded in the first uplink digital signals.