This report describes work performed with the goal of enabling an external radio telescope to be connected into the e-MERLIN correlator and correlated against other e-MERLIN antennas. Due to delays experienced in receiving equipment to build the e-MERLIN correlator, which have been beyond the control of Jodrell Bank Observatory, it has not yet been possible to perform a final demonstration of this. The current status, therefore, shall be explained in this report. The work presented in this document has been undertaken as part of the European Commission's Sixth Framework Programme funded EXPReS project, contract #026642 2. Data capture and transport In the current MERLIN system, radio astronomy signals are received at each antenna, mixed with local oscillators to lower the radio frequency (RF) down to an intermediate frequency (IF) and then transmitted over a microwave link to the correlator at Jodrell Bank Observatory (JBO). The signals from each antenna are then processed and digitised within the correlator, and then correlated. One of the fundamental differences between MERLIN and e-MERLIN is that the radio signals are now digitised at the antenna and transmitted over fibre optic links to the e-MERLIN correlator. The transmission of these signals, however, is not reliant upon standard protocols such as Ethernet or TCP/IP and so not readily transmittable over standard networks. Hence, in order to connect an external antenna into e- MERLIN over regular Wide Are Networks, separate hardware must be employed at the external antenna for capturing and transmitting the data, as well as at the correlator to receive the data stream and input this to the correlator. To accomplish this task, iBOBs 1 (internet Break out Boards) have been used. These are FPGA based devices, which feature two 10 Gigabit Ethernet capable CX-4 ports, for high-speed network connectivity, as well as 2 Z-DOK connectors which interface directly to the FPGA and can be programmed to behave as required. The iBOBs must be programmed with a firmware to control their behaviour, and variations have been written at JBO and Metsähovi Radio Observatory.