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Specifies whether or not the T.38 will fall back to Fax Passthrough if not supported by peer. If fallback is disabled, and Sonus SBC 1000/2000 the
If fallback is enabled, under the same circumstances as above, then when T.38 switch-over fails, the Sonus SBC 1000/2000 will attempt to switch-over to G.711 codec (if the peer supports it). |
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Specifies the maximum FAX connection bit rate (bits/second). This is the maximum rate at which a fax call will be negotiated between the Sonus SBC 1000/2000 and the fax machine. It takes longer to transfer a page at lower rate, however, lower rate may make the fax call more reliable. |
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Specifies the number of redundant packets sent for each T.30 (signaling) message. In a T.38 fax call, there are two types of packets exchanged between the two gateways: signaling packets carrying fax call control information and payload packets carrying page data. The Signaling Packet Redundancy parameter controls the number of redundant packets sent by Sonus SBC 1000/2000 for each T.38 signaling packet. Use a low value for this parameter if the data network is of good quality with no or little packet loss. |
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Specifies the error correction mode (ECM) for fax calls. ECM is used to make the fax call reliable (using retransmissions between fax machines). When disabled in the Sonus SBC 1000/2000 configuration, ECM will not be used, even if both fax machines support it. |
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