When dialing an international conference line through an Ericsson MD110 (version BC8), the call routes through a Nortel Gateway. Once the call connects to the international conference line, it prompts for the access code. The access code keeps getting rejected as not being recognized. We rerouted the numbers to go over the PSTN and there are no issues. Are there any known issues between the Ericsson MD110 and Nortel Gateways? The Ericsson version BC8 is very old as well - not sure if that would be the problem.