most recent 30 from http://mrwatsoncomehere.com 2010-03-10T14:30:35Z http://mrwatsoncomehere.com/feeds http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mrwatsoncomehere.com/questions/11/what-is-an-express-orderwire Bruce Fitzsimons 2009-10-20T03:33:16Z 2010-03-09T10:26:29Z

<p>SDH has a byte set aside for a 64Kbps voice channel in the header (byte E2) with the title MS orderwire byte. </p> <p>Why? What is this for?</p>

http://mrwatsoncomehere.com/questions/14/explanation-of-erlang Adso 2009-10-28T19:29:51Z 2010-03-05T00:25:44Z

<p>What is an erlang?</p>

http://mrwatsoncomehere.com/questions/19/not-able-to-run-open-cgf-with-both-client-and-server rajaram 2010-03-04T09:03:53Z 2010-03-04T09:03:53Z

<p>I have installed open cgf on two servers one i made as client, other as server Now i started running server with ./open-cgf -i Also at client i executed test_udp:simple_test({{65,23,156,214},3386},{{65,23,156,215},3386}} Not seeing any exchange of packets. as i am new to this domain it will be great if you help me out May be it is basic question thanks in advance for having patience and helping me out. rajaram.konda@gmail.com</p>

http://mrwatsoncomehere.com/questions/9/why-are-ss7-point-codes-different-sizes Bruce Fitzsimons 2009-10-13T07:56:48Z 2010-03-02T13:27:15Z

<p>Chinese and North American SS7 point codes are 24 bits, ITU and International point codes are 14 bits and Japanese point codes are 16 bits.</p> <p>Why?</p>

http://mrwatsoncomehere.com/questions/2/what-does-the-name-of-this-site-mean-who-was-mr-watson Bruce Fitzsimons 2009-10-12T09:12:54Z 2010-03-02T11:24:54Z

<p>Why is this site about Mr Watson? Who was he? Why was someone telling him what do do?</p>

http://mrwatsoncomehere.com/questions/17/is-asterix-my-best-option-for-an-entry-point-voip-small-business-solution jrlawhorne 2009-11-06T22:03:47Z 2010-03-02T02:24:28Z

<p>I own and operate a small business (only a couple people now). As we grow, I'll need some type of PBX system with extensions, an automated attendant, voice mail, etc.</p> <p>Asterix seems like it suites our needs and we're a software company so the open nature of the software is also attractive for our own customization. Should we consider other solutions?</p>

http://mrwatsoncomehere.com/questions/4/what-is-a-capability-point-code-in-ss7-signalling Bruce Fitzsimons 2009-10-12T09:20:51Z 2009-10-25T06:54:27Z

<p>I've heard of Capability Point Codes, but I don't know what they are or how they should be used?</p> <p>Are they ANSI or ITU? Do network elements still have their own Point Codes? Should replies use the Capability Point Code or their own?</p>

http://mrwatsoncomehere.com/questions/8/what-is-the-difference-between-an-ho-and-lo-optical-link Bruce Fitzsimons 2009-10-13T07:10:47Z 2009-10-13T07:10:47Z

<p>I've seen references to HO and LO optical links. This apparently means High Order and Low Order, but that isn't a lot of help. I've seen references to eigenvalues on Wikipedia, but that wasn't clear either.</p> <p>What makes an LO link? Conversely what makes a HO link and why do we need to differentiate?</p>

http://mrwatsoncomehere.com/questions/7/what-does-a-connfail-correlate-to Damian Glenny 2009-10-12T21:56:09Z 2009-10-12T21:56:09Z

<p>Looking specifically at an IS-826 deployment using ANSI TCAP, what should a CONNFAIL use as the invoke correlation?</p> <p>I believe that the message flow in a compliant environment will look like this, somewhat abstracted:</p> <ul> <li>ANLYZD tid anlyzd-tid cid anlyzd-cid</li> <li>CONNRES tid connres-tid-anlzyd-tid cid connres-cid-anlyzd-cid</li> <li>CCDIR tid ccdir-tid cid ccidr-cid</li> <li>ccdir_rr tid ccdir-tid cid ccdir-cid (try saying that three times fast)</li> <li>RESETTIMER tid connres-tid-anlzyd-tid cid connres-cid+1-anlyzd-cid</li> <li>...</li> <li>CONNFAIL tid anlyzd-tid-connres-tid cid anlyzd-cid+1-last-reset-timer-cid</li> <li>anlyzd_rr tid anlyzd-tid cid anlyzd-cid</li> </ul> <p>I think that this implies a CONNRES dialogue needs to remain available until either:</p> <ul> <li>a CONNFAIL is received on it</li> <li>a DISCONNRES is sent on it</li> <li>(optionally) CCDIR failure tears the call down</li> </ul> <p>This doesn't dovetail very well with the optionality of CCDIRs - how do you avoid potential call leaks without timers on an invoking dialogue? Do you rely on the MSC having a timer fire off the ANLYZD? Wouldn't the CONNRES force that to be elided?</p>

http://mrwatsoncomehere.com/questions/6/what-is-parlay-osa-parlay-x-oneapi Bruce Fitzsimons 2009-10-12T20:31:59Z 2009-10-12T20:31:59Z

<p>I hear people talking about opening up their networks, Application Enablement, and other fine things to allow 3rd party developers easy access to a mobile network core. And IMS core I guess.</p> <ol> <li>What are Parlay/OSA, Parlay/X and OneAPI? </li> <li>What are the relative benefits of these (presumably different) interfaces? </li> <li>Who owns the specifications? Where can I get them?</li> </ol>

http://mrwatsoncomehere.com/questions/3/what-are-the-preferred-methods-of-avoiding-sms-spam Bruce Fitzsimons 2009-10-12T09:17:11Z 2009-10-12T09:17:11Z

<p>How can a GSM/UMTS operator avoid receiving SMS spam? </p> <p>By spam I mean large quantities of SMS from another network that it (usually) can't recoup the cost of, towards customers who have not requested the messages.</p>

http://mrwatsoncomehere.com/questions/1/which-timeslots-are-special-on-an-e1 Bruce Fitzsimons 2009-10-12T09:07:57Z 2009-10-12T09:07:57Z

<p>Some timeslots on a channellised E1 are used for signalling, but when should I use timeslot 0, and when TS 15? What about TS 31?</p> <p>Do the same rules apply to T1s?</p>