Our recent work on the regioselective synthesis of a number of heterocycles (4) prompted us to search for a simple and effi- cient reagent for this heterocyclization. We have recently achieved a facile entry to this ring system 6 (5) with the use of a well-known brominating agent, pyridine hydrobromide per- bromide, which we report here.
Voice VLAN. 1  Voice VLAN allows you to enhance VoIP service by configuring ports to carry IP voice traffic from IP phones on a specific VLAN. VoIP traffic has a preconfigured OUI prefix in the source MAC address. 2  You can configure VLANs on which voice IP traffic is forwarded.
Re: Transit VLAN Brian Jul 9, 2011 6:51 AM (in response to ISMAIL (CCIE (Written) /CCSP/CCNP/JNCIS-ER/MCSA)) I have to admit the term Transit-VLAN is new to me, but I do not believe a Transit-VLAN is unique or tied to multicast. In fact the link you provide mentions nothing about multicast.