Got mails continuously from everywhere throwing question to me about AAC audio in H.323. So I arranged this post to example my previous posts: http://rg4.net/archives/1480.html, http://rg4.net/archives/1126.html, http://rg4.net/archives/1112.html The pcap file for this example can be downloaded here: HUAWEI_TE600-vs-ZTE_T800.pcapnp Here it is. 1. Basic knowledge: AAC LD descriptions in 14496-3 It operates at up […]

An example of AAC capability in H.245

AAC Profile definitions - audioObjectType 9


This is a guide for analysis H.245 terminalCapabilitySet and figure out does the terminal supports AAC LC or AAC LD? First capture the call and it's communication packages, KDV1000-HUAWEI.pcap. Open KDV1000-HUAWEI.pcap with wireshark. Filter the KDV1000-HUAWEI.pcap with H225||H245 Locate & expand the terminalCapabilitySet Find the items from capabilityTable which capabilityIdentifier […]

Does your H323 terminal support AAC LC or AAC LD?