... are supported for VoIP business operation, such as Call through, Call back, Calling card, Call shop, Call ... .38/T.30/pass through, Baud rate:14.4kbpsTrunk FeaturesSetting length of phone numberSupportedTDM channel managementSupportedOutbound route ... on priority, reattempt on alternative routesNumber ManipulationCaller/Called number from any directionNetwork FeaturesNetwork protocolTCP/UDP, HTTP, ARP ...