Alpha release of MVC(Mobile Video Conference) v2.6 for iPad and Android lauched

After monthes of hardworking, I'm proud to say that MVC v2.6 which I was participated in during the latest monthes has been released for Alpha run, which supports both Android & iOS.
Here are some detail informations about MVC v2.6 Alpha.

Continue reading “Alpha release of MVC(Mobile Video Conference) v2.6 for iPad and Android lauched”

Extend your H.323-based applications by using NON-STANDARD messages

Extend your H.323-based applications by using NON-STANDARD messages

Abstract

Comparing to SIP protocol or RTSP protocol, H.323 protocol is a strict one, which has its own working flow control, and every bits in it's protocol buf has its meaning. However H.323 provided a NON-STANDARD message machenism to allow users to extend your own bussiness rules. This document is discribing a example extended H.323 bussiness by using NON-STANDARD message of H.323. And also could be a guide of how to start your own NON-STANDARD message for your H.323-based applications.

Keywords: H.323, RAS, NON-STANDARD message Continue reading “Extend your H.323-based applications by using NON-STANDARD messages”

Method for implementing video added value service in H.323 standard based network

ABSTRACT
The present invention provides a method of realizing a video value-added service in a network based on the H.323 standard, including: expands the registrations, acceptances and mode RAS protocols in the H.323 standard; increase the value-added service guide and instruct messages about the video value-added service in the corresponding order message of the expanded RAS protocols; and guide a user terminal to the corresponding value-added service according to the guide and instruct message of the value-added service. According to the method of the present invention, the video value-added services of video requesting, video live broadcast, song requested video, network browsing, information inquiring and so on are realized in the network based on the H.323 standard. Continue reading “Method for implementing video added value service in H.323 standard based network”

Does your H323 terminal support AAC LC or AAC LD?

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 is 0.0.8.245.1.1.0 (ISO/IEC 14496-3 MPEG-4 audio)
  • There will be two items if your terminal supports both AAC LC & AAC LD.
  • Find parameterIdentifier: standard which value is 3, check parameterValue: unsignedMax.

And here are sample items: If the value is 2 then its an AAC LC capability. 2-aac-lc If the value is 23, then its an AAC LD capability. 23-aac-ld

Get AAC sampleRate/channels setting from H.245 terminalCapabilitySet

I’m new to H323, so if there something went wrong, please let me know it. I’ll be very apprieciated.

The information in H.245 terminalCapabilitySet is really sucked. As a newbie, I have no idea what it is whatever represented in the collapsing & nonCollapsing. Continue reading “Get AAC sampleRate/channels setting from H.245 terminalCapabilitySet”