Computing Admission Control Bandwidth Chapter 9: Network Requirements and Preparation
For instance, for G.729a voice encoding to be used between two sites, the inter-site voice
encoding must be set to G.729a and the ShoreGear voice switches at each end of the call
must be G.729a-capable.
9.15.1 WAN Bandwidth per Call (Full Duplex) Without cRTP
Table 9-16 defines the bandwidth, including IP overhead, that is used for each voice call
between sites when RTP Header Compression (cRTP) is not being used. The bandwidth
depends on the voice encoding used. For example:
•If you want to support 10 calls between this site and all other sites, and G.729a
voice encoding is used, set the admission control bandwidth to 260 Kbps. Before
you enter this value, make sure the bandwidth is available at this site.
•If you set your admission control bandwidth to 768 Kbps and G.729a voice
encoding is used, you can support up to 29 calls between this site and all other
ShoreTel recommends that you configure the admission control bandwidth to be less than
the bandwidth of the actual WAN link. This provides sufficient bandwidth for call control
signaling and other data traffic.
Figure 9-4 MultiSite Options