Andy Behrens <andyb@rags.coat.com> (05/17/91)
Pat,
This is the list that Rick Broadhead was asking for. (I've mailed him
a copy). I can't find this in the Telecom archives - maybe you want
to put a copy there.
Regards,
Andy
========================================
ringing.tones
========================================
> From: clive@x.co.uk (Clive Feather)
> Subject: Tones and Country Codes
> Date: 29 Oct 90 10:02:08 GMT
I just received British Telecom's latest international phone guide. A
new feature in this is descriptions of the tones used in each country
for ringing and engaged. Having merged this with my country codes
list, I thought that readers might be interested.
A few notes:
BT list two country codes I haven't seen before:
905 Turkish Cyprus
290 St. Helena
Six countries which are not directly diallable from the UK (and so no
country code is given) are not listed in the last table of country
codes I took from the Digest. Does anyone know their country codes ?
Antarctica Australian Territory
Chatham Islands
Midway Island
Pitcairn Islands
Tristan da Cunha
Wake Island
In v10i763, Jim Rees asks for the shortest world-wide unique number.
The guide gives the lengths of numbers for some countries. St. Helena
(290) has three digit numbers! Country codes 247, 674, 678, and 680
have four digit numbers.
Here is the up-to-date list. Lines beginning with # are comments.
Lines beginning with + are continuation lines, and repeat the code and
tone info.
# Tone codes (first is ring, second is engaged):
# A: double ring, repeated regularly (UK ringing tone)
# B: equal length on/off tones - about 1Hz (UK & USA engaged tone)
# C: slow equal length on/off tones
# D: fast equal length on/off tones - 2Hz to 3Hz
# E: tones separated by long pauses (USA ringing tone)
# F: long tones separated by short pauses
1 NANP (USA, Canada, and the Carribean)
+1 AB Anguilla, Dominica, Grenada & Carriacou, Montserrat,
+1 AB St Kitts and Nevis, St Lucia, St Vincent & Grenadines,
+1 AB Virgin Islands (UK)
+1 CB Bahamas, Bermuda, Cayman Islands, Puerto Rico,
+1 CB Virgin Islands (US)
+1 EB Barbados, Canada, Dominican Republic, Jamaica,
+1 EB United States of America
+1 EF Antigua & Barbuda
+1 FD Turks and Caicos Islands
20 CF Egypt
210 (reserved for Morocco)
211 (reserved for Morocco)
212 EB Morocco
213 CB Algeria
214 (reserved for Algeria)
215 (reserved for Algeria)
216 EB Tunisia
217 (reserved for Tunisia)
218 CF Libya
219 (reserved for Libya)
220 AB The Gambia
221 CD Senegal
222 Mauritania
223 CB Mali
224 EC Guinea
225 CD Cote d'Ivoire
226 EB Burkina Faso (Upper Volta)
227 CF Niger
228 CB Togolese Republic
229 CB Benin
230 AB Mauritius
231 ED Liberia
232 CB Sierra Leone
233 ED Ghana
234 CF Nigeria
235 CB Chad
236 EB Central African Republic
237 EB Cameroon
238 CD Cape Verde
239 CB Sao Tome and Principe
240 Equatorial Guinea
241 EB Gabonese Republic
242 CD Congo
243 CD Zaire
244 CD Angola
245 EC Guinea-Bissau
246 Diego-Garcia
247 [EA]B Ascension Island [4 digit numbers]
248 AB Seychelles
249 Sudan
250 CB Rwandese Republic
251 ED Ethiopia
252 CB Somalia
253 EB Djibouti
254 AF Kenya
255 AD Tanzania including Zanzibar
256 [AC]E Uganda
257 CB Burundi
258 EB Mozambique
259 (assigned to Zanzibar, but use 255 54)
260 EF Zambia
261 CB Madagascar
262 CB Reunion (France)
263 AB Zimbabwe
264 AB Namibia
265 ED Malawi
266 AD Lesotho
267 AB Botswana
268 AB Swaziland
269 Mayotte Island (part of France) and Comoros
27 AB South Africa
290 FB St. Helena [3 figure numbers]
295 ED San Marino (not used at present - 39 541 used)
296 AB Trinidad and Tobago (not used at present - 1 809 used)
297 EB Aruba
298 ED Faroe Islands
299 ED Greenland
30 ED Greece
31 ED Netherlands
32 CD Belgium
33 CB France (Metropolitan), Andorra (33 628), Monaco (33 93)
34 ED Spain
350 AB Gibraltar
351 EB Portugal
352 ED Luxembourg
353 AB Eire (Irish Republic)
354 CD Iceland
355 Albania
356 AB Malta
357 AF Cyprus
358 ED Finland
359 ED Bulgaria
36 FD Hungary
37 ED Federal Republic of Germany (Eastern Portion, former DDR)
38 E[BD] Yugoslavia
39 ED Italy, San Marino (39 541, see also 295), Vatican City (39 6 6982)
40 CB Romania
41 EB Switzerland, Liechtenstein (41 75)
42 ED Czechoslovakia
43 ED Austria
44 AB United Kingdom
45 BD Denmark
46 ED Sweden
47 ED Norway
48 EB Poland
49 ED Federal Republic of Germany (Western Portion)
500 EB Falkland Islands
501 ED Belize
502 CD Guatemala
503 EB El Salvador
504 CD Honduras
505 EB Nicaragua
506 EB Costa Rica
507 EA Panama
508 CB St. Pierre et Miquelon (France)
509 [EF]B Haiti
51 EB Peru
52 ED Mexico
53 CB Cuba
54 EB Argentina
55 EB Brazil
56 AB Chile
57 ED Colombia
58 CD Venezuela
590 CF Guadeloupe (France), including St. Barthelemy and French side
+590CF of St. Martin
591 EB Bolivia
592 AB Guyana
593 ED Ecuador
594 ED French Guiana
595 EB Paraguay
596 CB Martinique (part of France)
597 EB Suriname
598 EB Uruguay (East Republic)
599 EB Netherlands Antilles (Sint Maarten, Saba, Statia, Curacao,
+599EB Bonaire)
60 AB Malaysia
61 AB Australia
62 EB Indonesia
63 EB Philippines
64 AB New Zealand
65 AB Singapore
66 ED Thailand
670 EB Northern Mariana Islands (Saipan)
671 EB Guam
672 AB Australian External Territories (Norfolk Island, Christmas Island,
+672AB Cocos I.)
673 AB Brunei Darrusalm
674 EB Nauru [4 digit numbers]
675 AB Papua New Guinea
676 EB Tonga
677 DB Solomon Islands
678 ED Vanuatu (New Hebrides) [4 digit numbers]
679 AF Fiji Islands
680 EB Palau [4 digit numbers]
681 Wallis and Futuna
682 AB Cook Islands
683 Niue Island
684 EB American Samoa
685 AB Western Samoa
686 EB Kiribati Republic (Gilbert Islands)
687 CB New Caledonia
688 Tuvalu (Ellice Islands), Saipan
689 CB French Polynesia
690 Tokelan (Tokelau ?)
691 EB F.S. of Polynesia (Micronesia ?)
692 EB Marshall Islands
7 EB Union of Soviet Socialist Republics
81 EB Japan
82 FB Korea (Republic of) (South)
84 Viet Nam
850 ED Democratic People's Republic of Korea (North)
852 AB Hong Kong
853 EB Macao
855 Kampuchea (Cambodia)
856 Laos
86 CB China (866 assigned to Taiwan, but see also 886)
870 Reserved for Inmarsat
871 Inmarsat (Atlantic East)
872 Inmarsat (Pacific)
873 Inmarsat (Indian)
874 Inmarsat (Atlantic West)
875 Reserved for Inmarsat
876 Reserved for Inmarsat
877 Reserved for Inmarsat
878 Reserved for national mobile telephone purposes
879 Reserved for national mobile telephone purposes
880 AB Bangladesh
886 EB Taiwan (normally used, but not CCITT allocation - see 866)
90 EB Turkey, Turkish Cyprus (90 5)
91 AB India
92 [EA][BD] Pakistan
93 Afghanistan
94 AB Sri Lanka
95 EB Burma
960 AF Maldives
961 CB Lebanon
962 AB Jordan
963 EB Syrian Arab Republic
964 AB Iraq
965 EB Kuwait
966 EB Saudi Arabia
967 EB Yemen Arab Republic
968 FB Oman
969 ED Yemen Democratic Republic (united with Y.A.R. 967)
971 AB United Arab Emirates
972 EB Israel
973 AB Bahrain
974 AB Qatar
975 AC Bhutan
976 Mongolia
977 CE Nepal
98 ED IranRick Broadhead <YSAR1111@vm1.yorku.ca> (05/20/91)
For those of you who are interested, another source for telephone ringing and busy signals is Telecom Canada/Teleglobe Canada's "International Calling Guide. " It contains essentially the same information as British Telecom's international phone guide. I've also noticed that busy signals and ringing signals can vary WITHIN a country. For instance, in Canada and the United States, these tones vary depending on the exchange dialed. At least that's what I've found here in Toronto, and when calling various directory assistance numbers throughout the United States. The difference lies not in the length of these tones, but in their sound. What determines what exchanges will have what tones? Why should different numbers in the same city, Toronto for example, behave differently? Can anyone provide an explanation? I've tried to get an answer from the folks at Bell Canada, but the typical resp onse to my assertion that ringing signals differ from exchange to exchange is: "They do? -- I've never noticed that." I was told by a very helpful person at Teleglobe Canada that a non-technical discussion of telephone tones can be found in a publication called "Notes on the Networks." AT&T has informed me that this book has been discontinued. It apparently discussed issues such as "line-signalling" and "register signalling, " among other things. The libraries around here have never heard of this book. Could anyone suggest an equivalent publication today, or one that deals with topics such as line and register signalling? (anyone ever heard of *Notes on the Networks* before?) Rick Broadhead [Moderator's Note: 'Notes on the Network' is a well-known publication which has been mentioned here in the Digest many times. As to the difference in ringing/busy signals here in the USA, the difference is due purely based on the manufacturer of the equipment used in the office in particular. One sounds one way, another some other way. PAT]
"Robert E. Novak" <rnovak@mips.com> (05/22/91)
Does anyone have a phone, FAX, e-mail or snail mail address for
INMARSAT?
Robert E. Novak Mail Stop 5-10, MIPS Computer Systems, Inc.
{ames,decwrl,pyramid}!mips!rnovak 950 DeGuigne Drive, Sunnyvale, CA 94086
rnovak@mips.COM (rnovak%mips.COM@ames.arc.nasa.gov) +1 408 524-7183Claus Tondering <ct@dde.dk> (05/24/91)
andyb@rags.coat.com (Andy Behrens) writes: > # Tone codes (first is ring, second is engaged): > # A: double ring, repeated regularly (UK ringing tone) > # B: equal length on/off tones - about 1Hz (UK & USA engaged tone) > # C: slow equal length on/off tones > # D: fast equal length on/off tones - 2Hz to 3Hz > # E: tones separated by long pauses (USA ringing tone) > # F: long tones separated by short pauses > 45 BD Denmark No! Denmark is ED, not BD. Claus Tondering Dansk Data Elektronik A/S, Herlev, Denmark E-mail: ct@dde.dk [Moderator's Note: And he really should have left the USA out of his list also, since we have a wide variety of ringing and busy signals, depending on where you call. Each little telco has their own it seems, but gradually they are getting standardized. PAT]
robert@uunet.uu.net> (05/25/91)
YSAR1111@vm1.yorku.ca (Rick Broadhead) writes: > I've also noticed that busy signals and ringing signals can vary > WITHIN a country. For instance, in Canada and the United States, > these tones vary depending on the exchange dialed. ... > [Moderator's Note: 'Notes on the Network' is a well-known publication > which has been mentioned here in the Digest many times. As to the > difference in ringing/busy signals here in the USA, the difference is > due purely based on the manufacturer of the equipment used in the > office in particular. One sounds one way, another some other way. PAT] Well, I can understand the slight differences in tones, etc. But something rather odd occurred today: I dialed a number in 703, and instead of receiving the standard U.S. single ring, I received a non-US double ring. I realize that the equipment can produce whatever it wants (indeed, our PBX uses double-ring to indicate outside calls, but the outside caller still hears the US single ring). Isn't there some sort of BellCore standard that says that the CO has to produce a US single ring? Robert Oliver Rabbit Software Corp. 215 993-1152 7 Great Valley Parkway East robert@hutch.Rabbit.COM [Moderator's Note: Has anyone noticed that DID numbers into answering services in the USA now all seem to have their own sort of ring, with the same single ring, but a different pitch? I've gotten so I can tell immediatly when my call is (going to be) picked up by an answering service to which the called party has forwarded his number. (Or if the number I dialed is a DID line terminating in an answering service. Sometimes voice mail DID lines ring that way also. PAT]
Rick Broadhead <YSAR1111@vm1.yorku.ca> (05/26/91)
Robert L. Oliver (cbmvax!.UUCP!robert@uunet.uu.net) writes: > But something rather odd occurred today: I dialed a number in 703, and > instead of receiving the standard U.S. single ring, I received a non-U.S. > double ring. I had a similar experience just a few days ago. I dialed a number in my own area code (416), exchange 392, and was quite surprised to hear a double ring. This is the first time I have ever heard a double ring on the calling end. Are there any telephones on the market for a residential line that produce a double ring? Or is such a feature restricted to PBX system phones? Rick Broadhead ysar1111@VM1.YorkU.Ca [Moderator's Note: I don't know if you meant it the way it came out, but the telephone instrument has *nothing* to do with the ring you hear as the caller. What you heard must have been some kind of fluke; some temporary switch problem. PAT]
John Higdon <john@zygot.ati.com> (05/27/91)
Rick Broadhead <YSAR1111@vm1.yorku.ca> writes: > Are there any telephones on the market for a residential line that produce a > double ring *on the receiving end* ? I was referring to Robert Oliver's > comment that the PBX system phone in his office produces a double ring when > the call originates from outside the building. I was wondering if there are > phones that can be used on a residential line that will give a *double ring* > for incoming calls. I am talking about the telephone ringer. With some very limited exceptions (such as some cordless phones), all phone INSTRUMENTS ring at the rate ringing current is applied. If the CO (or PBX) sends a single ring cadence, the phone sounds with a single ring. The telephone ringer is a very stupid device in that it makes noise when powered (by ringing current) and is silent when it is not. The reason Robert Oliver's office phone rings the way it does is because it is connected to the PBX, which can power the ringer with any cadence it likes. The phones in my home ring with a single ring for outside calls, a double ring for inside calls, and a triple ring when called from the front door box. What are my phones? They are Cortelco 2500 sets. How can they behave in this manner? Because ringing current comes from my Panasonic KX-T1232 and NOT from the telephone company. If you really want your phones to ring with a cadence separate from the one supplied by your central office, then you will have to invest in some sort of phone system, be it a PBX, hybrid, or a key system. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !
YSAR1111@vm1.yorku.ca (Rick Broadhead) (05/27/91)
In volume 11, issue 397, I wrote: > Are there any telephones on the market for a residential line that produce > a double ring? Or is such a feature restricted to PBX system phones? The Moderator Noted: > I don't know if you meant it the way it came out, but the telephone > instrument has *nothing* to do with the ring you hear as the caller. I do realize that the double ring a *caller* may hear has nothing to do with the telephone being used. To clarify what I was asking here, I'll rephrase the question. What I meant was: Are there any telephones on the market for a residential line that produce a double ring *on the receiving end* ? I was referring to Robert Oliver's comment that the PBX system phone in his office produces a double ring when the call originates from outside the building. I was wondering if there are phones that can be used on a residential line that will give a *double ring* for incoming calls. I am talking about the telephone ringer. If anyone has any information, please let me know. Sorry for the confusion. Rick Broadhead ysar1111@VM1.YorkU.Ca
Steve Pershing <sp@questor.wimsey.bc.ca> (05/27/91)
john@zygot.ati.com (John Higdon) writes: > If you really want your phones to ring with a cadence separate from the > one supplied by your central office, then you will have to invest in > some sort of phone system, be it a PBX, hybrid, or a key system. Not to belabour the point, but there are tone-ringer chips from many chip manufacturers which can be relatively easily configured to produced whatever ringing cadence one wants, given a bit of electronic knowledge. Chips from Motorola and Mitel come to mind. I think a simple circuit consisting of a CMOS 555-type timer powered by a bridge rectifier across the telephone line (and isolated by means of neon lamp) would do the job. The 555 could be used to trigger and/or power the Tone Ringer chip as I think it can supply around 20ma current (if memory serves me correctly). Steve Pershing, System Administrator The QUESTOR Project: FREE Usenet News/Internet Mail; Sci, Med, AIDS, more : Internet: sp@questor.wimsey.bc.ca : POST: 1027 Davie Street, Box 486 : Phones: Voice/FAX: +1 604 682 6659 : Vancouver, British Columbia : Data/BBS: +1 604 681 0670 : Canada V6E 4L2 :
Jon Sreekanth <jon_sree@world.std.com> (05/28/91)
In article <telecom11.397.6@eecs.nwu.edu> YSAR1111@vm1.yorku.ca (Rick Broadhead) writes: > Are there any telephones on the market for a residential line that > produce a double ring? Or is such a feature restricted to PBX system > phones? > [Moderator's Note: I don't know if you meant it the way it came out, > but the telephone instrument has *nothing* to do with the ring you > hear as the caller. What you heard must have been some kind of fluke; > ome temporary switch problem. PAT] You may have reached a fax switch, or some similar hack. These units pick up the line on hearing a ring signal, and send out a "phantom ringback", waiting to sense a fax or modem carrier tone. A lot of them generate a pretty yucky ringback (= single stage filtered square wave). Since the ring at the called end and the telephone company ringback sent back to the caller are un-synchronized, and these boxes pick up the line very fast, it's possible that the only "ringback" the caller hears comes from terminal equipment, not telco ringback. Though it's surprising that they should generate a non-standard ringback, instead of the standard US ringback. At least one fax switch I know of (CCI, Colorado ?) has an EPROM upgrade to generate different countries' ringbacks. But to get back to the main thread: is it "mandatory" for all US exchanges to generate the familiar ringback ? Jon Sreekanth Assabet Valley Microsystems Fax and PC products 346 Lincoln St #722, Marlboro, MA 01752 508-562-0722 jon_sree@world.std.com
Tony Harminc <TONY@mcgill1.bitnet> (05/28/91)
"Robert L. Oliver" <cbmvax!.UUCP!robert@uunet.uu.net> writes: > Well, I can understand the slight differences in tones, etc. But > something rather odd occurred today: I dialed a number in 703, and > instead of receiving the standard U.S. single ring, I received a > non-US double ring. I realize that the equipment can produce whatever > it wants (indeed, our PBX uses double-ring to indicate outside calls, > but the outside caller still hears the US single ring). Isn't there > some sort of BellCore standard that says that the CO has to produce a > US single ring? The CO doesn't produce the ringing tone in the case of Direct In Dial to a PBX. The PBX produces all the call progress tones, unless for some reason the CO can't reach the PBX trunk (PBX is down, trunks are all busy, etc.) I often hear the double ring when calling PBXs in North America. It does seem curious that the double ring was assigned to the external rather than the internal calls, though. Tony Harminc
gaarder@anarres.ithaca.ny.us (05/29/91)
Until about five or so years ago, a large, probably crossbar New England Tel office in Newton, Mass. (617-964) had a double ring as the normal cadence. This was the sound of both the actual ringer and of the ringback. The first time I called a friend there after they replaced the switch I heard a standard ringback and hung up, thinking I'd misdialed. Steve Gaarder gaarder@theory.tc.cornell.edu gaarder@anarres.ithaca.ny.us
bud@uunet.uu.net> (05/29/91)
In a recent post, our illustrious Moderator wrote: > [Moderator's Note: I don't know if you meant it the way it came out, > but the telephone instrument has *nothing* to do with the ring you > hear as the caller. What you heard must have been some kind of fluke; > some temporary switch problem. PAT] Most C.O. switches built in the last ten years *deliberately* divorce the ringback tone heard by the calling party from the acrual ringing sound at the called party's phone. This has been done to cut down on revenue "leakage" due to ringing code schemes: "Well, when we get to Aunt Gertie's house, we'll call and leave it ring three times." Modern switches, in general, return ringback both slower and asynchronously from the actual ringing in order to foul up those schemes. "Why did you answer? It only rang twice." "Twice? It started on the fourth ring here!" Bud Couch - ADC/Kentrox If my employer only knew standard BS applies
sbrack@iuvax.cs.indiana.edu> (05/30/91)
kentrox!bud@uunet.uu.net (Bud Couch) writes: > Most C.O. switches built in the last ten years *deliberately* divorce > the ringback tone heard by the calling party from the acrual ringing > sound at the called party's phone. This has been done to cut down on > revenue "leakage" due to ringing code schemes: "Well, when we get to > Aunt Gertie's house, we'll call and leave it ring three times." > Modern switches, in general, return ringback both slower and > asynchronously from the actual ringing in order to foul up those > schemes. "Why did you answer? It only rang twice." "Twice? It started > on the fourth ring here!" Do the IECs do anything to combat sending messages other ways? I can remember my mother telling me (when I was a young man going on a long trip) that when I landed, I was to make a collect call home, and say it was from "Mr. Holmes." It seems that doing something like this would be very costly to the IECs. Oh, I made that collect call through AT&T. Funny, it wasn't that long ago that we had one phone company. 8| <- The jury's still out on whether I should ) or (. Steven S. Brack | sbrack%bluemoon@nstar.rn.com Jacob E. Taylor Honors Tower | sbrack@bluemoon.uucp The Ohio State University | sbrack@nyx.cs.du.edu 50 Curl Drive | sbrack@isis.cs.du.edu Columbus, Ohio 43210-1112 USA | brack@ewf.eng.ohio-state.edu +1 614 293 7383 or 419 474 1010 | Steven.S.Brack@osu.edu
Clive Feather <clive@x.co.uk> (05/30/91)
In 11-394, ct@dde.dk writes: > No! Denmark is ED, not BD. And the Moderator Notes: > And he really should have left the USA out of his list also, since > we have a wide variety of ringing and busy signals, depending on > where you call. The list that andyb@rags.coat.com posted was originally posted by me, and comes direct from a British Telecom publication. Please blame them, not Andy or me. Also, cbmvax!.UUCP!robert@uunet.uu.net writes: > I dialed a number in 703, and instead of receiving the standard U.S. > single ring, I received a non-US double ring. This could be because the number is connected to another country. For example, 1-800-XDESK-57 is located in Cambridge UK (it maps to a UK number, not the one in my signature), and so gives the double-ring that all UK numbers do. Clive D.W. Feather | IXI Limited clive@x.co.uk | 62-74 Burleigh St. Phone: +44 223 462 131 | Cambridge CB1 1OJ (USA: 1 800 XDESK 57) | United Kingdom
"Fred R. Goldstein" <goldstein@delni.enet.dec.com> (05/30/91)
In article <telecom11.397.6@eecs.nwu.edu>, YSAR1111@vm1.yorku.ca (Rick Broadhead) writes... > Robert L. Oliver (cbmvax!.UUCP!robert@uunet.uu.net) writes: >> But something rather odd occurred today: I dialed a number in 703, and >> instead of receiving the standard U.S. single ring, I received a non-U.S. >> double ring. > I had a similar experience just a few days ago. I dialed a number in > my own area code (416), exchange 392, and was quite surprised to hear > a double ring. This is the first time I have ever heard a double > ring on the calling end. A couple of possible causes of a double ring in the US: 1) Rolm PBXs use the double ring. If the call terminated on a DID trunk into a Rolm machine, then the PBX generated the ring. Note that DID service implies that the PBX, not the CO, generates the tones. Hence some Rolm oddities: If the line is equipped with Autopark, then if you listen to the busy signal for ten seconds, it goes away and beeps the called party. The caller doesn't pay until the callee picks up. Clever. 2) The No. 1 Crossbar generated double ring on some numbers. Few are left in service but 703 is PacBell so there may be a few left ... Fred R. Goldstein Digital Equipment Corp., Littleton MA goldstein@delni.enet.dec.com voice: +1 508 952 3274 Do you think anyone else on the planet would share my opinions, let alone a multi-billion dollar corporation?
grayt@uunet.uu.net> (05/31/91)
In article <telecom11.404.9@eecs.nwu.edu> ivgate!Jack.Winslade@uunet. uu.net (Jack Winslade) writes: > YSAR1111@vm1.yorku.ca (Rick Broadhead) writes: > There was a discussion of ringing tones in a local conference a while > back (but I can't find it now) which discussed this. It made mention > of a certain suburban Omaha office which until recently had a > vibrating reed tone generator. It was remarked that it sounded like > the passing of gas. ;-) The UK has recently moved to the precise tone plan. However the definition of the previous dial tone was: a PURRING tone at about -15dBm. A more euphemistic way of describing the tone perhaps :-) Tom Gray
John Higdon <john@zygot.ati.com> (05/31/91)
Fred R. Goldstein writes: > 2) The No. 1 Crossbar generated double ring on some numbers. Few are > left in service but 703 is PacBell so there may be a few left ... What? Did I read that right? Last time I was in the Commonwealth of Virginia, the RBOC was the descendent of C&P. Is Pac*Bell there as an independent somewhere? I cannot imagine that the forces of the universe would allow what Pac*Bell calls service to escape the borders of California. But the mention of #1 crossbar is sound. Back in the not-so-distant past, all phones served by local #1 crossbar had the normal "single" ring if the numbers ended in 000-499 and a "double" ring if they ended in 500-999. I used to feel so superior because I had the more highly advanced #5 crossbar. Unfortunately, I still do. They now have #5ESS. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !
Scott Hinckley <scott@hsvaic.boeing.com> (05/31/91)
In <telecom11.409.4@eecs.nwu.edu> kentrox!bud@uunet.uu.net (Bud Couch) writes: > Modern switches, in general, return ringback both slower and > asynchronously from the actual ringing in order to foul up those > schemes. "Why did you answer? It only rang twice." "Twice? It started > on the fourth ring here!" I have not found this to be the case in Atlanta or Huntsville. In both towns I have had an answering machine with a 'toll saver' feature. If there has not been a message left it allows four rings then picks up. If there has been a message it picks up after two rings (thus if you are calling long distance to check for calls you can hang up on the third ring to avoid charges for no messages). I have always had it pick up after the correct number of rings as heard by either the caller or the callee (plenty of time was spent verifying this). Scott Hinckley Internet:scott@hsvaic.boeing.com|UUCP:...!uunet!uw-beaver!bcsaic!hsvaic!scott DISCLAIMER: All contained herein are my opinions, they do not|+1 205 461 2073 represent the opinions or feelings of Boeing or its management| BTN:461-2073
robert@uunet.uu.net> (06/01/91)
goldstein@delni.enet.dec.com (Fred R. Goldstein) writes: > 2) The No. 1 Crossbar generated double ring on some numbers. Few are > left in service but 703 is PacBell so there may be a few left ... ACK! Run for your lives! Has PacBell taken over Virginia too?! Robert Oliver Rabbit Software Corp. 215 993-1152 7 Great Valley Parkway East robert@hutch.Rabbit.COM Malvern, PA 19355 !uunet!cbmvax!hutch!robert
Andy Sherman <andys@ulysses.att.com> (06/04/91)
In article <telecom11.397.6@eecs.nwu.edu>, YSAR1111@vm1.yorku.ca (Rick Broadhead) writes: > [Moderator's Note: I don't know if you meant it the way it came out, > but the telephone instrument has *nothing* to do with the ring you > hear as the caller. What you heard must have been some kind of fluke; > some temporary switch problem. PAT] He might have hit a PBX or Centrex that uses a double ring to indicate an outside call. Having moved around the Joisey locations of Bell Labs quite a bit, I've encountered this feature in ESSX (a centrex), Dimension, and System 85. Andy Sherman/AT&T Bell Laboratories/Murray Hill, NJ AUDIBLE: (908) 582-5928 READABLE: andys@ulysses.att.com or att!ulysses!andys What? Me speak for AT&T? You must be joking!
"Fred R. Goldstein" <goldstein@delni.enet.dec.com> (06/04/91)
In article <telecom11.415.3@eecs.nwu.edu>, john@zygot.ati.com (John Higdon) writes: > Fred R. Goldstein writes: >> 2) The No. 1 Crossbar generated double ring on some numbers. Few are >> left in service but 703 is PacBell so there may be a few left ... > What? Did I read that right? Last time I was in the Commonwealth of > Virginia, the RBOC was the descendent of C&P. --- Mea Culpa. I read "704" instad of "703" and thought about oranges, talking mice, and various other fruits and nuts who hang out in PacBell land. I doubt that Virginia has any 1XB's left. But I may be wrong. Fred R. Goldstein Digital Equipment Corp., Littleton MA goldstein@delni.enet.dec.com voice: +1 508 952 3274 Do you think anyone else on the planet would share my opinions, let alone a multi-billion dollar corporation?
tep@ucsd.edu> (06/05/91)
In article <telecom11.420.3@eecs.nwu.edu> Andy Sherman <andys@ulysses. att.com> writes: X-Telecom-Digest: Volume 11, Issue 420, Message 3 of 10 > In article <telecom11.397.6@eecs.nwu.edu>, YSAR1111@vm1.yorku.ca (Rick > Broadhead) writes: > He might have hit a PBX or Centrex that uses a double ring to indicate > an outside call. Having moved around the Joisey locations of Bell > Labs quite a bit, I've encountered this feature in ESSX (a centrex), > Dimension, and System 85. Hmmm. Our brand-new ROLM 97xx signals with a double ring for an outside call, but the caller hears a single ring. Speaking of our brand-new system, several people have asked me (why me?) questions about DIDs. Is the following explanation correct: For an incoming (outside) call: The CO translates the dialed number and either: If it is POTS ("single-line home phone") routes it to the proper dedicated line. If it is a DID, discovers some kind of indication that this number should be routed to any of a set of trunks (our incoming trunks). The CO then picks any of the available incoming trunks (is this like a rotary?) and routes the call over that trunk to the PBX, passing the dialed number (destination) as well. The PBX then signals the instrument assigned that DID, and if it answers connects the trunk to the instrument. Notes: If all of the trunks are busy, the CO will signal busy to the caller, even if the instrument is on-hook, the PBX will never even see the call. When we get Caller-ID, if you have one of the ROLM 240XX phones, you will also see the phone number of the (outside) caller on the display. Am I even close? PS: I am also looking for any "stupid phonemail(tm) tricks" that anyone can suggest. I have a sense of humor that has been described as "strange, demented but never intentionally hostile". Something we can all laugh at here, as a way to make the new phone system a little less scary for some of our more telephobic employees. We have ROLM PhoneMail, Release 5.0. Tom Perrine (tep) |Internet: tep@tots.Logicon.COM |Voice: +1 619 597 7221 Logicon - T&TSD | UUCP: sun!suntan!tots!tep | or : +1 619 455 1330 P.O. Box 85158 |GENIE: T.PERRINE | FAX: +1 619 552 0729 San Diego CA 92138
Carl Moore (VLD/VMB) <cmoore@brl.mil> (06/05/91)
The ABCDEF codes apparently are those in the British Telecom booklet dated September 1990 which I received recently. It shows Denmark as BD, not ED; apparently this is intended for people calling from the U.K.
David E A Wilson <david@cs.uow.edu.au> (06/06/91)
cmoore@brl.mil (VLD/VMB) writes: > The ABCDEF codes apparently are those in the British Telecom booklet > dated September 1990 which I received recently. It shows Denmark as > BD, not ED; apparently this is intended for people calling from the > U.K. The codes are identical in the OTC International Direct Dial pages of Telecom Australia phone books - and Denmark is listed as Ring=B, Busy=D. David Wilson Dept Comp Sci, Uni of Wollongong david@cs.uow.edu.au
Rick Broadhead <YSAR1111@vm1.yorku.ca> (06/12/91)
A slight twist to this subject:
The following appeared in the {Toronto Star} on June 10, 1991.
YOU MAY HEAR ADS ON THE TELEPHONE
Some day, you literally may have commercials coming out of your ears.
Bell At lantic, one of the largest regional telephone companies in the
U.S., has bought the patent on a system for patching recorded ads into
the four-second pauses between rings in a phone call. Its inventor
says studies show callers wait an average of three rings each time
they call someone. "That's two messages," he points out.
- Knight-Ridder News Service -
(How many times do TELECOM readers let the phone ring before they hang
up? -- I usually wait for more than three rings)
Rick Broadhead ysar1111@VM1.YorkU.Ca