How much bandwidth is required for 32 channels?

Generally, with G.729 Codec per E1 bandwidth consumption is 936 Kbps. One E1 means 32 channels. This can be easily calculated by 31.2 Kbps per call * 30. For 32 channels with G.723 Codec the bandwidth consumption is 657 Kbps. Given by, 21.9 Kbps per call * 30. SBO can reduce bandwidth consumption to –

255 Kbps per E1, ie, 32 channels (8.5 Kbps per call) with G.729 Codec and

180 Kbps per E1, ie, 32 channels (6 Kbps per call) with G.723 Codec.

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