most recent 30 from http://mrwatsoncomehere.com 2010-07-30T02:34:37Z http://mrwatsoncomehere.com/feeds/user/2 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 2010-07-27T15:22:57Z

<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/9/why-are-ss7-point-codes-different-sizes Bruce Fitzsimons 2009-10-13T07:56:48Z 2010-07-20T20:23:02Z

<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 2010-07-20T16:23:01Z

<p>Why is this site about Mr Watson? Who was he? Why was someone telling him what do do?</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/11/what-is-an-express-orderwire/12#12 Bruce Fitzsimons 2009-10-20T03:35:14Z 2009-10-20T03:35:14Z

<p>An express orderwire is a dedicated voice channel between two points, the TIA define it <a href="http://www.tiaonline.org/market%5Fintelligence/glossary/index.cfm?term=%26%23%24K%5BSB%3BK%0A" rel="nofollow">here</a>. In SDH Transport terms it is a dedicated byte per header that effectively gives a 64Kbps channel between two points.</p> <p>Transport engineers think a lot differently to LAN/WAN people in this respect, Ethernet has no such concept, nor does ATM to my knowledge. I know this concept exists for electricity-related systems though.</p> <p>Anyone with any more information? Is the byte used on every SDH header? Even for STM-256s? (Isn't that more than 64Kbps?)</p>

http://mrwatsoncomehere.com/questions/9/why-are-ss7-point-codes-different-sizes/10#10 Bruce Fitzsimons 2009-10-13T08:21:32Z 2009-10-13T08:21:32Z

<p>ANSI and Chinese SS7 point codes are probably bigger as they need to address more network elements in their geography than other national networks.</p> <p>Japanese point codes are different, just because. [I'd like to know if there is a reason]</p> <p>For the record, ANSI point codes are often written in 8-8-8 format (network, cluster, member) whereas ITU pointcodes are more commonly represented in decimal or hexadecimal. However they can be written in 3-8-3 format or any local convention (up to and including 7-7).</p> <p>ANSI point codes are allocated by <a href="http://www.ss7pcadmin.com/index.cfm" rel="nofollow">Telecordia</a>, ITU national point codes are allocated by a national authority.</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/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>