Hi Multiport, I mean more than one port :-), basically the pbx with have a E1 coming into it, which is 30 lines. Now if theother end of the pbx is connected to 40 extensions in the office, I really want all 40 to be able to make a voip call, rather than getting engaged tone. The customer doesnt want to replace the existing pbx, hence would want to put something behind it, which connects to the IP world. hence by dialing *1 [or whatever prefix] the call would hit the pbx, it would then send that out via the IP device as a VoIP call. I dont really want to build a asterisk setup for them locally, but would just rather go for a out of the box solutions which already exists... Iqbal Shidan wrote: