McDewey

fax protocol pass-through g711ulaw no vad Note: Fax Pass-through is not the same as Fax Passthrough. Fax Passthrough leverages Cisco Network Services Engines (NSEs) in order to switch over from a voice call to a fax call. CUBE T.38 Configuration Note: T.38 Version 3 (Super G3 fax speeds) is supported in Cisco IOS Versions 15.1(1)T and later. In order to configure T.38 Version 0 (G3 fax speed) under voice service voip, use this command (in bold): voice service voip no ip address trusted authenticate allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none In order to configure T.38 at the dial-peer, use this command (in bold): dial-peer voice 1 voip description T38 Test destination-pattern ^1000$ session protocol sipv2 session target ipv4:192.168.0.1 dtmf-relay rtp-nte fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none no vad In order to configure T.38 Version 3, either under voice service VoIP or at the dial-peer, use this command: fax protocol t38 version 3 ls-redundancy 0 hs-redundancy 0 fallback none If a Media Transfer Protocol (MTP) is used when interworking through a CUBE, it must support codec passthrough. Cisco Unified Communications Manager (CUCM) MTP supports codec passthrough for Version 8.6.1 and later. Cisco IOS MTP must have codec pass-through in the Digital Signal Processor (DSP) Farm configuration: dspfarm profile 2 mtp
codec pass-through codec g729r8 maximum sessions software 50 associate application SCCP Time-Division Multiplexing (TDM) Gateway Configuration for Interworking with CUBE For an SCCP controlled TDM gateway, this configuration is used for Fax Pass-Through.