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.
Server paging both UC520 Extensions and Multicast Addresses (VLAN 1) What I have is a VoIP infastructure that operates on the default VLAN of 100. I also have a data infastructure that operates on the default VLAN of 1. I have a server that is paging 2 ways - one through SIP and one through Multicast.