H04M 7/124
Where pstn/isdn interconnects two networks other than pstn/isdn
Official title: {where PSTN/ISDN interconnects two networks other than PSTN/ISDN}
H04M7/124 (Where pstn/isdn interconnects two networks other than pstn/isdn) appears on 19 US grants and 15 published applications in this corpus.
Search patents in H04M- Granted patents
- 19
- Published applications
- 15
- Assignees
- 16
- Inventors
- 35
- Latest grant
- 12 May 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 4 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
By publication year.
Recent patents
- High availability voice over internet protocol telephony12 May 2020US 10,652,305 B2
- Apparatus for call management and method thereof9 Jul 2019US 10,348,785 B2Nanning Fugui Precision Industrial Co., Ltd.
- Generic multichannel center for network applications and services3 Jul 2018US 10,015,267 B2
- Advanced conference call controls26 Sep 2017US 9,774,746 B1AT&T Mobility II LLC
- Impairment reduction for tandem VoIP calls27 Oct 2015US 9,172,726 B2Alcatel Lucent
- High Availability Voice Over Internet Protocol Telephony20 Feb 2020US 2020/0059508 A1PrimeVOX Communications, LLC
- Apparatus for call management and method thereof11 Jul 2019US 2019/0215347 A1Nanning Fugui Precision Industrial Co., Ltd.
- Apparatus for call management and method thereof3 Jan 2019US 2019/0007468 A1Nanning Fugui Precision Industrial Co., Ltd.
- Generic multichannel center for network applications and services1 Oct 2015US 2015/0280983 A1
- Pots extender for voice fallback in a subscriber line15 Nov 2012US 2012/0287925 A1Wi-LAN, Inc.
Most cited
By later US patents
- Multimedia channel management through PSTN signaling165US 6,430,176 B1Nortel Networks Limited · 2002
- System and method for alternate path routing and redundancy based on cost sensitive network selection45US 8,223,951 B1EnVid Technologies, LLC · 2012
- Interworking of packet-based voice technologies using virtual TDM trunks17US 7,283,533 B1Cisco Technology, Inc. · 2007
- Advanced conference call controls16US 9,774,746 B1AT&T Mobility II LLC · 2017
- Method and apparatus for providing efficient VoDSL gateway-to-gateway communication13US 6,771,763 B1Lucent Technologies Inc. · 2004