1.25G 80km Bidirectional SFP Pair

When using Bidirectional transceivers, they must always be matched in order to get a working fiber link. For instance, the SFP-GE-BX80-SM1490 using Tx:1490/Rx:1550nm must be matched with SFP-7080-WB using Tx:1550nm/Rx:1490nm. For ease of understanding, transceivers are marked A and B and they must always be used together.