Return-Path: X-Original-To: rtcweb@ietfa.amsl.com Delivered-To: rtcweb@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 15E3721F85E8 for ; Sun, 21 Jul 2013 18:35:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.147 X-Spam-Level: X-Spam-Status: No, score=-6.147 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-4, SARE_SUB_ENC_UTF8=0.152] Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cCSYHyx1G9XJ for ; Sun, 21 Jul 2013 18:35:23 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) by ietfa.amsl.com (Postfix) with ESMTP id 0E6CA21F85D1 for ; Sun, 21 Jul 2013 18:35:22 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml203-edg.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.5-GA FastPath queued) with ESMTP id ATQ65208; Mon, 22 Jul 2013 01:35:20 +0000 (GMT) Received: from LHREML406-HUB.china.huawei.com (10.201.5.243) by lhreml203-edg.huawei.com (172.18.7.221) with Microsoft SMTP Server (TLS) id 14.1.323.7; Mon, 22 Jul 2013 02:34:56 +0100 Received: from SZXEML454-HUB.china.huawei.com (10.82.67.197) by lhreml406-hub.china.huawei.com (10.201.5.243) with Microsoft SMTP Server (TLS) id 14.1.323.7; Mon, 22 Jul 2013 02:35:01 +0100 Received: from szxeml558-mbs.china.huawei.com ([169.254.8.128]) by SZXEML454-HUB.china.huawei.com ([10.82.67.197]) with mapi id 14.01.0323.007; Mon, 22 Jul 2013 09:34:56 +0800 From: "Lijing (Jessie, Technology Introduction & Standard and Patent Dept)" To: Bo Burman , "rtcweb@ietf.org" Thread-Topic: Some thoughts on optional audio codecs Thread-Index: Ac6BN11IugiIgzm2TXug3PomYB8N3AFQBe5g Date: Mon, 22 Jul 2013 01:34:55 +0000 Message-ID: References: In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.66.171.171] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Subject: [rtcweb] =?utf-8?b?562U5aSNOiBTb21lIHRob3VnaHRzIG9uIG9wdGlvbmFs?= =?utf-8?q?_audio_codecs?= X-BeenThere: rtcweb@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Real-Time Communication in WEB-browsers working group list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jul 2013 01:35:31 -0000 SSBmdWxseSBhZ3JlZSB3aXRoIHRoZSBpZGVhIHRvICIgdXNlIGV4aXN0aW5nICJuYXRpdmUiIGNv ZGVjcyAiLiANCg0KSW4gYWRkaXRpb24sIGZyb20gYSB3ZWIgZGV2ZWxvcGVyJ3MgcGVyc3BlY3Rp dmUsIGluIG9yZGVyIHRvIG1ha2UgdXNlIG9mIHRoZSAibmF0aXZlIiBjb2RlY3MsIHRoZSBicm93 c2VyIHNob3VsZCBwcm92aWRlIGNvZGVjIEFQSXMgdG8gb3BlbiB0aGUgbG9jYWwgY29kZWMgY2Fw YWJpbGl0aWVzIG9mIHRoZSBkZXZpY2UgdG8gYXBwbGljYXRpb25zIGFuZCBkZXZlbG9wZXJzLiBJ dCByZWFsbHkgbWFrZSBzZW5zZS4NCg0KQmVzdCBSZWdhcmRzDQpMaWppbmcNCg0KDQotLS0tLemC ruS7tuWOn+S7ti0tLS0tDQrlj5Hku7bkuro6IHJ0Y3dlYi1ib3VuY2VzQGlldGYub3JnIFttYWls dG86cnRjd2ViLWJvdW5jZXNAaWV0Zi5vcmddIOS7o+ihqCBCbyBCdXJtYW4NCuWPkemAgeaXtumX tDogMjAxM+W5tDfmnIgxNeaXpSAyMzoxNQ0K5pS25Lu25Lq6OiBydGN3ZWJAaWV0Zi5vcmcNCuS4 u+mimDogW3J0Y3dlYl0gU29tZSB0aG91Z2h0cyBvbiBvcHRpb25hbCBhdWRpbyBjb2RlY3MNCg0K UmVnYXJkaW5nIHRoZSBwcmV2aW91cyBkaXNjdXNzaW9uIG9uIG9wdGlvbmFsIGF1ZGlvIGNvZGVj cyBpbiB0aGUgKGN1cnJlbnRseSBleHBpcmVkKSBkcmFmdCBvbiBSVENXRUIgYXVkaW8gY29kZWNz IChodHRwczovL2RhdGF0cmFja2VyLmlldGYub3JnL2RvYy9kcmFmdC1pZXRmLXJ0Y3dlYi1hdWRp by8pOg0KDQpJIHRoaW5rIG1vc3QgcGFydGllcyBpbnZvbHZlZCBpbiBXZWJSVEMgd29yaywgbXlz ZWxmIGluY2x1ZGVkLCBob3BlIGFuZCBiZWxpZXZlIHRoYXQgaXQgd2lsbCBiZSB1YmlxdWl0b3Vz IGFuZCBlYXN5IHRvIGluY2x1ZGUgcmVhbC10aW1lIG1lZGlhIGNvbnZlcnNhdGlvbiBmdW5jdGlv bmFsaXR5IGluIG5lYXJseSBhbnkgd2ViIGNvbnRleHQuIFNpbmNlIGl0IHdpbGwgYmUgdGhhdCBl YXN5LCBpdCBjYW4gYmUgZXhwZWN0ZWQgdGhhdCBtb3N0IHdlYiBkZXZlbG9wZXJzIG5lZWQgbm90 IGJlLCBhbmQgdGh1cyB3aWxsIG5vdCBiZSwgbWVkaWEgc3BlY2lhbGlzdHMgb3IgdmVyeSBrbm93 bGVkZ2VhYmxlIGFib3V0IGNvZGVjcy4NCg0KVGhlIGRlZmluaXRpb24gb2YgUlRDV0VCIE1USSBj b2RlY3MgZW5zdXJlcyB0aGF0IGNvbW11bmljYXRpb24gaXMgcG9zc2libGUgc2luY2UgYXQgbGVh c3Qgb25lIGNvZGVjIHdpbGwgYWx3YXlzIGJlIGZvdW5kLCBidXQgaXQgaXMgbm90IHBvc3NpYmxl IHRvIGNsYWltIHRoZSByZXN1bHRpbmcgY29tbXVuaWNhdGlvbiB0byBiZSBvcHRpbXVtIGZvciBl dmVyeSBwb3NzaWJsZSBjb250ZXh0Lg0KDQpFdmVuIGlmIFdlYlJUQyB3aWxsIGJlIGNsb3NlIHRv IHViaXF1aXRvdXMsIHRoZXJlIHdpbGwgZm9yIHF1aXRlIHNvbWUgdGltZSBsaWtlbHkgYmUgYSBk ZXNpcmUgdG8gcmVhY2ggcmVhbC10aW1lIG1lZGlhIGRvbWFpbnMgYW5kIGRldmljZXMgdGhhdCB3 ZXJlIG5vdCBvcmlnaW5hbGx5IGRlc2lnbmVkIGZvciBhbmQgdGh1cyBhcmUgbm90IG9wdGltaXpl ZCBmb3IgdXNlIHdpdGggV2ViUlRDLiBBIGNvbW11bmljYXRpb24gZGV2aWNlIHRoYXQgaXMgbm90 IGRlc2lnbmVkIHNvbGVseSBmb3IgV2ViUlRDIHVzZSB3aWxsIGxpa2VseSBpbmNsdWRlIGZ1bmN0 aW9uYWxpdHkgYW5kIGNvZGVjcyBhbHNvIGZvciBpdHMgIm5hdGl2ZSIgZG9tYWluLg0KDQpBbnkg YWRkZWQgY29zdCBvZiBub3QgYmVpbmcgYWJsZSB0byB1c2UgZXhpc3RpbmcgIm5hdGl2ZSIgY29k ZWNzIHdpbGwgdmFyeSBib3RoIGluIGFtb3VudCBhbmQgd2hlcmUgdGhlIGNvc3QgaGFzIHRvIGJl IHRha2VuLiBFbGltaW5hdGluZyBpdCBpcyBpbmRlZWQgYW4gb3B0aW1pemF0aW9uLCBidXQgdGhl IHRvdGFsIGNvc3Qgc2F2aW5ncyBtYXkgc3RpbGwgYmUgc2lnbmlmaWNhbnQuDQoNCldpdGggdGhl IGN1cnJlbnQgZGVzaWduIGFuZCB0byBteSB1bmRlcnN0YW5kaW5nLCBpdCB3aWxsIGJlIHRoZSBi cm93c2VyIHZlbmRvcidzIGNob2ljZSB0byBhZGQgb3B0aW9uYWwgY29kZWNzLCBpbmNsdWRpbmcg YW55ICJuYXRpdmUiIGRvbWFpbiBjb2RlY3MuICBUaGUgY2hvaWNlIG1heSBwb3NzaWJseSBiZSBk ZWxlZ2F0ZWQgdG8gaW5kaXZpZHVhbCB3ZWIgZGV2ZWxvcGVycyBtYWtpbmcgdXNlIG9mIFdlYlJU QyBmdW5jdGlvbmFsaXR5LiBBIGJyb3dzZXIgdmVuZG9yIHdpbGwgYXJndWFibHkgaGF2ZSB0byBr bm93IGVhY2ggdGFyZ2V0IHBsYXRmb3JtIHRvIHNvbWUgZXh0ZW50LCBidXQgaXQgY2FuIGhhcmRs eSBiZSBhc3N1bWVkIHRoYXQgYSB3ZWIgZGV2ZWxvcGVyIGtub3dzIHRoZSBjYXBhYmlsaXRpZXMg b2YgYWxsIGRldmljZXMgdGhhdCB3aWxsIHVzZSB0aGUgV2ViUlRDLWVuYWJsZWQgc2l0ZSB1bmxl c3MgdGhlIGJyb3dzZXIgY2FuIHByb3ZpZGUgdGhlIG5lZWRlZCBpbmZvcm1hdGlvbi4gVGhlcmUg aXMgYSByaXNrIHRoYXQgIm5hdGl2ZSIgY29kZWNzIGluIGRldmljZXMgYXJlIG5vdCB3ZWxsIGhh bmRsZWQsIHVubGVzcyB0aGUgbW90aXZhdGlvbnMgYW5kIG1ldGhvZHMgdG8gbWFrZSB1c2Ugb2Yg dGhlbSBhcmUgYmV0dGVyIHNwZWNpZmllZC4NCg0KV2hpbGUgYW55IGF1ZGlvIGNvZGVjcyBiZXNp ZGVzIHRoZSBNVEkgb25lcyBhcmUgY2xlYXJseSBvcHRpb25hbCwgSSBiZWxpZXZlIHRoZSBzdWdn ZXN0ZWQgdGV4dCBhZGRpdGlvbiBvbiBvcHRpb25hbCBhdWRpbyBjb2RlY3MgdG8gdGhlIFJUQ1dF QiBhdWRpbyBkcmFmdCBpbiBUaWNrZXQgIzEyIChodHRwOi8vdHJhYy50b29scy5pZXRmLm9yZy93 Zy9ydGN3ZWIvdHJhYy90aWNrZXQvMTIjKSB0byBiZSB0b28gYnJpZWYgY29uc2lkZXJpbmcgdGhl IGFib3ZlLg0KDQpJbiB0aGF0IGRyYWZ0LCBJIHdvdWxkIHByZWZlciBzb21ldGhpbmcgbW9yZSBp biBsaW5lIHdpdGg6DQoNCiJJZiBvdGhlciBzdWl0YWJsZSBhdWRpbyBjb2RlY3MgYXJlIGF2YWls YWJsZSB0byB0aGUgYnJvd3NlciB0byB1c2UsIGl0IGlzIHJlY29tbWVuZGVkIHRoYXQgdGhleSBh cmUgYWxzbyBpbmNsdWRlZCBpbiB0aGUgb2ZmZXIgaW4gb3JkZXIgdG8gbWF4aW1pemUgdGhlIHBv c3NpYmlsaXR5IHRvIGVzdGFibGlzaCB0aGUgc2Vzc2lvbiB3aXRob3V0IHRoZSBuZWVkIGZvciBh dWRpbyB0cmFuc2NvZGluZyIuDQoNCkFzc3VtaW5nIHRoYXQgdGhlIGJyb3dzZXIgdmVuZG9yIChv ciB3ZWIgZGV2ZWxvcGVyKSBpcyBzdWZmaWNpZW50bHkgY29uY2VybmVkIHdpdGggY29kZWNzIHRv IHJlYWQgdGhlIGF1ZGlvIGNvZGVjcyBkcmFmdCAob3IgdGhlIGNvcnJlc3BvbmRpbmcgUkZDIHRv LWJlKSwgdGhlIGFib3ZlIHRleHQgbWF5LCBhcyBhIHN0YXJ0LCBnaXZlIHNvbWUgYWRkZWQgZ3Vp ZGFuY2Ugd2h5IG5vbi1NVEkgY29kZWNzIG1heSBiZSBkZXNpcmFibGUgdG8gY29uc2lkZXIgaW4g YWRkaXRpb24gdG8gdGhlIE1USSBvbmVzLg0KDQpDaGVlcnMsDQpCbw0KDQpNdWx0aW1lZGlhIFRl Y2hub2xvZ2llcw0KRXJpY3Nzb24gUmVzZWFyY2gNCkbDpHLDtmdhdGFuIDYNClNFLTE2NCA4MCwg S2lzdGEsIFN3ZWRlbg0Kd3d3LmVyaWNzc29uLmNvbQ0KX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18NCnJ0Y3dlYiBtYWlsaW5nIGxpc3QNCnJ0Y3dlYkBpZXRm Lm9yZw0KaHR0cHM6Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9ydGN3ZWINCg==