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There are two versions of FaxTap for SIP<\/a>: one for the end user that just wants to solve an FoIP problem, and one for the lawful-intercept (LI) OEM. Fax Tap for SIP 2.0, slated for release in late June, includes added features for both types of users.<\/p>\n <\/p>\n FaxTap is an FoIP analysis tool that picks up where Wireshark leaves off. Wireshark will display the envelope of the PCM data, give you a SIP ladder, and, if it’s a T.38 call, give you something of a T.30 ladder. But it doesn’t render the image nor does it give you the T.30 ladder for a G.711 call. FaxTap does all of this and much more, including full support for T.38 version 3 with V.34 support. Version 2.0 will be easier to use and remove a hole in the LI OEM version that today the bad guys can sneak through.<\/p>\n <\/p>\n For the end user we are adding a GUI to do something about the number of command-line arguments that must be passed in. This means that front-line tech support, in addition to the motivated equipment OEM, can easily take advantage of FaxTap for SIP, a product that is removing the mystery from FoIP call analysis.<\/p>\n <\/p>\n As for the LI OEM, we are adding support for NSS\/NSF (Non-Standard Facilities and Non-Standard Services). This is a tough nut to crack since NSF and NSS give the two communicating terminals the ability to step outside the T.30 protocol, which governs how standard fax terminals communicate. If the caller recognizes the answering machine’s ID and NSF and wants to utilize a proprietary facility, it may reply with an NSS, at which point FaxTap is in the dark, and must resort to guessing about what is going on.<\/p>\n <\/p>\n The biggest guess is what modem is being used. If the two terminals are using a standard fax modem, FaxTap can analyze the frequency components of the data and hope that it gets a match to the signature of a standard fax modem. It will then attempt to decode the image data and then present the data to FaxTap’s image-conversion facility. If the image can be decoded … great. Otherwise FaxTap outputs the decoded binary file.<\/p>\n <\/p>\n The same process is used to track multiple transitions from voice to fax to voice, etc, which the T.30 standard also supports.<\/p>\n <\/p>\n If you are an LI OEM, why not add support for fax since FaxTap makes it easy and affordable? So, look into FaxTap for SIP 2.0. Interested? Email us<\/a> or call 770-449-7775.<\/p>\n<\/div>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” el_class=”newsletter_inner_page” css=”.vc_custom_1578991890670{padding-top: 70px !important;padding-bottom: 70px !important;}” z_index=””][vc_column el_class=”newsletter_inner_page_bg”][vc_column_text]<\/p>\n <\/p>\n Well, although less than half the ports in fax servers sold today are PSTN-connected, OEMs and their channel can\u2019t ignore the 25% of ports that remain PSTN. But that doesn\u2019t mean that enterprises are enthusiastic about investing over $15,000 for a T1 fax board. Not using the MIPS available on ultra-powerful PCs and paying through the nose for DSP-based fax boards hasn\u2019t made sense for 10 years, and buyers are insisting on alternatives if they aren\u2019t quite ready to move to FoIP.<\/p>\n <\/p>\n You may recall that\u00a0BladeWare<\/a>, which uses the host PC to handle all the fax media processing tasks, has for years supported the Sangoma PSTN-interface boards. As BladeWare supports the entire telephony product line (ISDN PRI, BRI, POTS, etc.) this instantly put BladeWare at the front of the line when it came to PSTN support. And, remember that $15,000 fax board? Well, with BladeWare it\u2019s $3,000, including the per-port software license fee.<\/p>\n <\/p>\n But just because PSTN interfaces will go the way of the telegraph sometime in the next decade, we\u2019ve not been resting on past development projects. We\u2019ve invested significantly in BladeWare\u2019s Sangoma support to make it easier for the OEM to develop and support. Moreover, demand for this product line will actually grow significantly when BladeWare\u2019s voice support is released.<\/p>\n <\/p>\n So, we\u2019re making sure our OEM customers have the cost-effective PSTN support they need to remain competitive.<\/p>\n <\/p>\n Take a look at our\u00a0PSTN product line<\/a>\u00a0on our website.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” el_class=”newsletter_inner_page” css=”.vc_custom_1579012629443{padding-top: 70px !important;padding-bottom: 70px !important;background-color: #f6f6f6 !important;}” z_index=””][vc_column el_class=”newsletter_inner_page_bg”][vc_column_text]<\/p>\n <\/p>\n T.38 specifies support for both TCP and UDP (UDPTL) as T.38\u2019s transport. Although T.38 over TCP is rarely used, we\u2019ve added it to BladeWare in release 2.4.12 at the request of one of our OEM customers. But why, you ask, is the use of UDP almost universal, after all, TCP is error free, while UDP is best effort? Well, read on\u2026<\/p>\n <\/p>\n The long and short answer is latency. TCP was developed specifically for two servers to exchange large data files. Although the faster the file transfer the better, real-time streaming and latency were not top design considerations. However, UDP was designed specifically for low overhead and latency, just what you want in a real-time media transport.<\/p>\n <\/p>\n But UDP lacks the features essential for error correction. Enter UDPTL, which adds sequence numbers to the UDP packets, allowing the T.38 application layer to implement forward error correction and redundancy, which are used by the T.38 session if negotiated by SDP.<\/p>\n <\/p>\n TCP is so rare that the IETF\u2019s standardization of secure fax in\u00a0UDP Transport Layer (UDPTL) over Datagram Transport Layer Security<\/a>\u00a0(December 2013) is specific to UDPTL. TCP is not mentioned, possibly because TCP has standardized security (TLS) and it\u2019s rarely used.<\/p>\n <\/p>\n Want to talk secure fax? Call 770-449-7775, and press 1.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” el_class=”newsletter_inner_page” css=”.vc_custom_1578991890670{padding-top: 70px !important;padding-bottom: 70px !important;}” z_index=””][vc_column el_class=”newsletter_inner_page_bg”][vc_column_text]<\/p>\n <\/p>\n Yeah, we\u2019re fax guys, but we\u2019ve been developing and licensing voice technologies to OEMs for 20 years. And we even have the industry\u2019s\u00a0highest-performance VXML interpreter<\/a>\u00a0based on VXi, for which we offer a commercial license. And then there\u2019s\u00a0BladeWare Studio<\/a>, a suite of products including Studio Client and Studio Server, which gives you a GUI-based application developer and standards-based server to publish your vendor-independent VXML-based apps. But, for most developers, that\u2019s not good enough: where\u2019s the voice platform?<\/p>\n <\/p>\n Unless the OEM already has a voice platform, there\u2019s no place for that nice high-performance interpreter to execute. That\u2019s where BladeWare voice comes in. BladeWare is Commetrex\u2019 value-adding telephony platform which currently supports fax for both PSTN and SIP, but it\u2019s readily extensible to include support for additional media and networks, such as voice, video, and WebRTC. But, although we\u2019ve had great G.168 LEC, vocoders, CPA, and tone technologies for OpenMedia, our signal-processing subsystem, for a long time, there\u2019s a lot more to comprehensive voice support. So we\u2019ve been working on it.<\/p>\n <\/p>\n Finally, last week we completed a project to take what OpenMedia calls Media-Stream Transforms (MSTs \u2026 the \u201calgorithms\u201d) and integrate them into OpenMedia, then we added the other MSTs needed to make our voice feature \u201ccomprehensive\u201d for messaging, voice response, and gateway applications. Call it BladeWare voice Phase I.<\/p>\n <\/p>\n Phase II requires that we drop this voice subsystem into BladeWare and integrate it with BladeWare\u2019s call-control subsystems. We\u2019ve had it relatively easy until now since supporting voice in SIP is much more complicated than fax. So, stay tuned.<\/p>\n <\/p>\n Want to learn more about our voice initiative? Need a voice subsystem for your new server or gateway? We now have it on the shelf. Give us a call or\u00a0email us<\/a>\u00a0today.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” el_class=”newsletter_inner_page” css=”.vc_custom_1579012638436{padding-top: 70px !important;padding-bottom: 70px !important;background-color: #f6f6f6 !important;}” z_index=””][vc_column el_class=”newsletter_inner_page_bg”][vc_column_text]<\/p>\n <\/p>\n Commetrex and our sister company, NetGen Communications, will be exhibiting at\u00a0ITEXPO Vegas<\/a>\u00a0in August. We\u2019ve moved up to a bigger booth and will be sharing the space with\u00a0New Rock Technologies<\/a>, NetGen\u2019s partner out of Shanghai, China. Please plan to stop by booth 520 and learn more about Smart ATA, NetGen\u2019s soon-to-be-announced wireless IP PBX, and other solutions we offer to make FoIP work for you.<\/p>\n <\/p>\n Not going to the show in Vegas? You\u2019ll have another chance to catch us at\u00a0Cloud Partners<\/a>\u00a0in New Orleans in September. This will be our first time exhibiting at this show, but we\u2019re extending our market reach and are very excited about the new opportunity.<\/p>\n <\/p>\nFax Boards? Why Talk About Fax Boards?<\/h3>\n
T.38 Over TCP For BladeWare<\/h3>\n
Voice Moves<\/h3>\n
Rendezvous In Vegas Or New Orleans?<\/h3>\n