Earlier I began a thread regarding choosing the right ISR for an implementation if all it's doing is terminating PRIs and not routing data vlan traffic. The different ISRs have different interfaces, so I started to wonder exactly how many voice streams could be processed throug a given interface and a given codec. Can someone tell me if this looks correct?
By these numbers, all things being equal, a 2811 with 8 pri circuits should be fine as its FastEthernet port has plenty of bandwidth. Port Speed G711 (80Kbps) Simultaneous Audio Conversations G729 (24 Kbps) Simultaneous Audio Conversations 1.54 Mbps (T1) 19.2 audio streams 9.6 64 audio streams 32 100 Mbps (FastEthernet) 1280 audio streams 640 4266.66 audio streams 2133.33 1000 Mbps (Gig Ethernet) 12800 audio streams 6400 42666.66 audio streams 21333.33 1024 Kbps = 1 Mbps 1024 Mb = 1 Gb 1048576 Kbps = 1 Gb -- -Shikamaru
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