Both Circuit switching and Message switching are the telecommunication techniques where information is made to be transferred from source to destination with minimal loss in transmission.
In both type of switching there is dedicated path which is being used for the transmission of information however this path is dedicated in case of Circuit switching while not dedicated in Message switching.
Following are the important differences between Circuit switching and Message switching.
|Sr. No.||Key||Circuit Switching||Message Switching|
|1||Definition||In telecommunication Circuit switching is a type of method where a dedicated network is implemented in which two network nodes establish a dedicated communications channel (circuit) through that network before the nodes may communicate.||In Message switching, the source and destination nodes are not connected with each other. The data transfer is done by the intermediate nodes.|
|2||Path and Node||In Circuit switching a dedicated path consist of mainly two nodes at each end i.e., sender and receiver is implemented which is entirely responsible for the transmission of information.||On other hand in case of Message Switching no such dedicated path is implemented as the path used in this switching is consist of several nodes between the sender and receiver and each node is responsible for transferring the message from one node to the next.|
|3||Message storage||As there are only two nodes in case of Circuit switching, no storage of information in the path or at the node end. Message generated at the sender side get transmitted to the receiver directly without getting stored or retransmitted in the path through the node.||On other hand in case of Message switching each node act as sender and receiver and stores the incoming information before send to the next node. This make each node in this switching capable to recover the information if gets lost due to any reason.|
|4||Resend||As node did not save the information during the transmission, there is no option to resend it if it gets lost due to some reason until the sender sends it again.||On other hand if information get lost in Message Switching then the corresponding node could resend the information as it has the information stored.|
|5||Bandwidth||Circuit switching reserves the full bandwidth in advance as there are only two nodes and dedicated path for transmission.||On other hand Message Switching does not reserve the entire bandwidth, in advance it consumes bandwidth node per node as per the requirement and releases the bandwidth when gets free.|
|6||Addressing||Geographical addressing is used in Circuit Switching based on the geo-location of both the nodes.||On other hand Hierarchical addressing is implemented in case of Message Switching as there is hierarchical connection between the nodes used in this type of switching.|