A pluggable synchronization module comprising: an antenna input; a Global Navigation Satellite System receiver operative to receive satellite-transmitted signals comprising positioning-related information over said antenna input, wherein said Global Navigation Satellite System receiver is further operative to determine a time reference from received said positioning-related information and to provide a time reference signal according to said determined time reference; an electrical interface supporting communication with said pluggable synchronization module; and a processing circuitry connected to said Global Navigation Satellite System receiver and to said electrical interface, wherein said processing circuitry is operative to deduce synchronization information from said time reference signal and to transmit said deduced synchronization information over said electrical interface, wherein said processing circuitry is further operative to: - receive an external time reference information from a host unit over said electrical interface; and - deduce synchronization deviation information by comparing said external time reference information received over said electrical interface with said time reference signal provided by said Global Navigation Satellite System receiver; whereby said deduced synchronization information to be transmitted comprises said synchronization deviation information, and wherein said pluggable synchronization module is configured to be placed within a small form-factor pluggable cage of a network element and wherein said electrical interface being a small form-factor pluggable interface operative to connect said processing circuitry to the network element. an antenna input; a Global Navigation Satellite System receiver operative to receive satellite-transmitted signals comprising positioning-related information over said antenna input, wherein said Global Navigation Satellite System receiver is further operative to determine a time reference from received said positioning-related information and to provide a time reference signal according to said determined time reference; an electrical interface supporting communication with said pluggable synchronization module; and a processing circuitry connected to said Global Navigation Satellite System receiver and to said electrical interface, wherein said processing circuitry is operative to deduce synchronization information from said time reference signal and to transmit said deduced synchronization information over said electrical interface, wherein said processing circuitry is further operative to: - receive an external time reference information from a host unit over said electrical interface; and - deduce synchronization deviation information by comparing said external time reference information received over said electrical interface with said time reference signal provided by said Global Navigation Satellite System receiver; whereby said deduced synchronization information to be transmitted comprises said synchronization deviation information, and - receive an external time reference information from a host unit over said electrical interface; and - deduce synchronization deviation information by comparing said external time reference information received over said electrical interface with said time reference signal provided by said Global Navigation Satellite System receiver; wherein said pluggable synchronization module is configured to be placed within a small form-factor pluggable cage of a network element and wherein said electrical interface being a small form-factor pluggable interface operative to connect said processing circuitry to the network element.