Multi-source agreements can’t guarantee compatibility, because life is not always that simple. Over the years equipment vendors have attempted to lock in the customer by making transceivers proprietary for commercial reasons. This is usually achieved by the use of special codes in MSA defined or undefined memory locations. This means that once inserted, a message saying “unsupported transceiver”, or something similar, will display to the user. At TXO, this is a strong area of expertise for us. Our skilled engineers resolve this for you in advance of product dispatch by writing appropriate codes onto the transceiver. Clearly in this regard it is important to select a supplier that has the means to test the transceiver in the correct networking device to ensure interoperability. Again something we can support you with.