I am looking for Cisco products that can act as SIP gateways. These products need to be priced for the SMB market. We implement the SIP gateways by using available BRI or PRI ports on the clients existing PBX (provided it is not an IP PBX). The gateways will need to provide 16-32 concurrent outbound calls using G.729a codec. We use the PBX dialing plans to decide on how calls are routed. Local calls typically will be routed over the PSTN, but national, mobile, on net and international will be routed via VoIP. Internet connectivity is either through DSL or channelized E1. Please advise on the recommended Cisco products that will be effective for this type of operation.
My concern is regarding the processing capacity of the device. The load created by the encoding can be a bottleneck on these devices. For the record...what is the maximum number of G.729a concurrent calls this device will support...is it 30? If I needed a bigger device for more calls, what would the next device upwards be?
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The short answer is that you don't.... That isn't entirely true while at
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...