... to numbering plan, 355-3 56 business case for, 4 -6 dial peers, 166 configuring, 169 -172fax transmissions, 66 Cisco Fax Relay, 76- 77fax pass-through, 67 -69 fax relay, 69 H.323 T.38 fax relay, ... call setup, configuring, 462 - 463 intrazone call setup, configuring, 460 IP networksfax transmissions, 66 Cisco Fax Relay, 76- 77fax pass-through, 67 -69 fax relay, 69 H.323 T.38 fax relay, 77-79MGCP ... types, 191-193messages, 198-199 566 fax transmissions in IP networksfax transmissions in IP networks, 66 Cisco Fax Relay, 76- 77fax pass-through, 67 -69 fax relay, 69 H.323 T.38 fax relay, 77-79MGCP...