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1AESS Numbers


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#1 ThoughtPhreaker

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Posted 01 July 2006 - 01:48 PM

After scanning a good amount of numbers in a Maryland 1A, I've discovered something odd. Most numbers, even subscriber numbers, will start ringing without the familiar click before the ringing. In fact, the only numbers that make any sort of relay click are the numbers leading to intercept, regardless of exchange. Having heard this ubiquitous intercept system many times before, I can safely say that it will not make any noises whatsoever before an intercept report on a fully digital system. Here are a few examples.

410-362-9973 - Sweep tone. Broken?
410-362-9997 - Trunk noise test
410-362-9979 - Disconnected number
410-362-9978 - Not In Service number

Does anybody have any ideas as to what could be happening down here? My guess is that they're in the process of phasing out the 1A. I'll post the rest of the results of my scan after I get back from a family trip to North Carolina.

#2 spoekalb

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Posted 01 July 2006 - 07:22 PM

That's weird that the intercepts CHUNK but the test numbers don't. My guess is that it's a digital switch with recordings from the 1AE days.
Attached File  4103629973.wav   1.43MB   63 downloadsAttached File  4103629997.wav   476.29KB   42 downloadsAttached File  4103629979.wav   1.06MB   37 downloadsAttached File  4103629978.wav   544.73KB   35 downloads

#3 unity

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Posted 02 July 2006 - 03:03 AM

They could be using some sort of add-on intercept machine that has an audible relay in it. Could always call 'em up and ask them.

#4 Fone Ranger

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Posted 03 July 2006 - 01:06 PM

After scanning a good amount of numbers in a Maryland 1A, I've discovered something odd.


*Awww!* From the topic title I thought you'd found a dialup or PAD which gave you access to a 1AESS I/O terminal. :( You disappoint me, Mr Bond...

#5 ThoughtPhreaker

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Posted 03 July 2006 - 04:35 PM

Strangely enough, I called again, this time from the DMS-100 serving my house, as I was calling from a 5ESS beforehand. This time, I called a few numbers, all of them giving the familiar click before they ring. I'm guessing it has to do with the time your end office lets you hear what's happening on the outgoing trunk. For those of you served out of an office that doesn't let you hear the relays, I recommend going out to a payphone or getting a calling card served from a DMS-100.

When I get through copying them from my minidisk, I'll post a comparison of the two switches making calls to the 1A office in Odessa, Texas, both from the same phone using the same recording method.

The various recordings scattered throughout thus exchange are announced by various people. I believe them to be "Cornbreath", Pat Trumbull and a few switchmen.

9900 - NIS
9901 - Modem
9902 - Ringout
9903 - "Hello. I'm SSCU. Your identification, please"
9904 - Ringout
9905 - Ringout
9906 - Ringout
9907 - "Hello, I'm SSCU. Your identification, please"
9908 - Ringout
9909 - Ringout
9910 - CBCAD
9911 - Ringout
9912 - Silent Answer
9913 - Silent Answer
9914 - Busy
9915 - Ringout
9916 - Ringout
9917 - Ringout
9918 - CBCAD, five digit codes may have changed.
9919 - Ringout
9920 - Silent Answer
9921 - Silent Line
9922 - Ringout
9923 - Ringout
9924 - Carrier Access Code required
9925 - All Circuits Busy
9926 - "Forty Three, Channel zero"
9927 - Silent Termination
9928 - Ringout
9929 - Ringout
9930 - "950 digits" recording
9931 - Silence
9932 - "Digits 950 not necessary" recording
9933 - Ringout
9934 - Ringout
9935 - Ringout
9936 - Ringout
9937 - The code you have dialed is not working
9938 - Three digit areacode plus number is required for all numbers in Maryland
9939 - "Cannot process custom calling request" recording
9940 - Reorder
9941 - "Reciever off hook" recording
9942 - "Dialing one is not necessary" recording
9943 - "Call did not go through" recording
9944 - "Coin deposit required" recording
9945 - CBCAD recording, different announcer and text
9946 - "Dialing Error" recording
9947 - "Custom calling failure" recording
9948 - Reorder
9949 - Ringout
9950 - Static when picks up, pulsing 440 hz, eventually goes to other tone.
9951 - Ringout
9952 - NIS
9953 - Ringout
9954 - Ringout
9955 - Ringout
9956 - Silent Answer
9957 - Ringout
9958 - Ringout
9959 - Ringout
9960 - NIS
9961 - NIS
9962 - Ringout
9963 - Ringout
9964 - Ringout
9965 - Ringout
9966 - Ringout
9967 - Ringout
9968 - Ringout
9969 - Busy
9970 - Reorder
9971 - Ringout
9972 - Ringout
9973 - Sweep; works sometimes, will also go to static in mid-sweep other times.
9974 - NIS
9975 - Ringout
9976 - Goes to your local or local tandem recording
9977 - Ringout
9978 - NIS
9979 - DISCO
9980 - Ringout
9981 - NIS
9982 - Silent Answer
9983 - Business
9984 - NIS
9985 - Ringout
9986 - Silent Answer
9987 - Milliwatt
9988 - Milliwatt
9989 - Milliwatt
9990 - Ringout
9991 - NIS
9992 - Milliwatt
9993 - Number changed to non-published
9994 - Ringout
9995 - NIS
9996 - Ringout
9997 - Trunk noise test
9998 - Picks up, short burst of 2200 hz, hangs up
9999 - Picks up, short burst of 2200 hz, hangs up

*Awww!* From the topic title I thought you'd found a dialup or PAD which gave you access to a 1AESS I/O terminal. sad.gif You disappoint me, Mr Bond...


Don't feel dissapointed just yet. The modem seems to need a nudge string of some sort, much like every other modem associated with a central office I've seen.
EDIT: Fixed "Cornbreath's" name. Also, if anyone would like to play around with the trunk noise tester, it responds to touchtones by producing noise, tones, or both. Any insight into what 9950 is would be appreciated.

Edited by ThoughtPhreaker, 04 July 2006 - 09:08 AM.





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