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Originally Posted by ttosun  Do you have the answers?  ~TT |
If you stick with STANDARDS -- you will not be unhappy. SIP-based trunking and SIP-based sets are where the industry is going. In the future (and to an extent, TODAY), you can pick up any SIP-based telephone and use it with your IP-based PBX. Although it's always best to go with a vendor's own telephone sets (for full feature sets), you have options with SIP.
Also take into consideration your internal (and external/remote) network's capability to handle small packets. As we use more and more VoIP, we are forcing our switches and routers to handle smaller and smaller packets. This makes our switches and routers MORE busy than they are with typical Ethernet traffic, as EACH packet frame must be analyzed. The smaller the packets, the more frames to analyze. We may find we need more "robust" routers, or more "intelligent" IP-telephony aware routers that can handle these small packets and keep throughput up.