HiWe have a E1 on Cisco3640 and router WAN Cisc3640 doing NAT. The VoIP in this scenario works fine, but after, we change the router WAN to Cisco 7604 but now we get voice in one-way. We're checking the E1 and there is not problem. What should we che...

Hi.We have a Cisco 7604 with advipservicesk9_wan.mz-122-33.SRA1 and Windows ISA 2000 where there is a PPTP connection set up through DMZ. When we try to restablish the connection is not possible the wear is when we connected the old Cisco 3640 the co...

Hi. We installed a cisco 7604 with basic configuration to give access to internet,but we're seen that there are problems downloading files. For example, we can connect but after few seconds it's freeze or just the connection is lost.Did we miss somet...

Hi. We installed a cisco 7604 with basic configuration to give access to internet,but we're seen that there are problems downloading files. For example, we can connect but after few seconds it's freeze or just the connection is lost.Did we miss somet...