* WHAT HAPPENED?: Since Phractal said that I could steal
this file from NPANXX006, I did. So dont get mad at me
because Phractal told me to do it. I <3 Phractal :)
____________________________________________________________________________________
|
|
003.) The Belize PSTN |
Written By: phractal (phractal@teamphreak.net) |
Written For: NPANXX006 (www.teamphreak.net) |
Written On: 06/30/02 |
|
____________________________________________________________________________________|
Belize, aka British Honduras is a central american country bordering Mexico and Guatemala,
with a coast on the Atlantic Ocean. Belize is a developing country, which is good for
curious phreakers since they still utilize a lot of older telephone technology.
1) Belize codes
2) Signalling routes
3) Signalling information
4) End Notes
(I)
For such a small country Belize has a # of direct toll free connections
Belize Direct:
From US-
+1-800 746 1154 (MCI Trunk)
+1-800 235 1154 (AT&T Trunk)
+1-800 578 1154 (Sprint Trunk)
From Canada-
+1-800 463 1154
From UK-
0-800-890-501
If you manage to get KP1 access to Belize, or need a number to connect to to test
things, Belize's city codes are:
Belize City 2
Belmopan 8
Benque Viejo Del Carmen 93
Corozal Town 4
Dangriga 5
Independence 6
Orange Walk 3
Punta Gorda 7
San Ignacio 92
San Pedro 26
Stan Creek 5
(2)
For calls from North America, the call will most likely go through one of the 12 major
LD signalling stations and make its way to a Central Office in West Palm Beach. Belize
has no direct cable connection to anything off its coast, so either the call will be
done through microwave or sattelite, if it doesn't go through cable. However, the calls
to the directs seem fast enough to believe that most, if not all calls go via cable.
From West Palm Beach, Submarine Cabling connects a variety of the carriebien in a fiesta
of coaxials and fiber optics, as heavily described in Faith 11 and Echelon issue 3.
The 2 most likely routes from West Palm Beach are 2 fiber optic connections:
The Colombus2 fiber connection to Cancun, Mexico or to Jamaica via Florida-Jamica fiber
connection, then routed from Jamaica to Panama on the Jamaica-Panama fiber connection.
If all channels of both fiber cables are used up, you have a good chance of recieving a
busy signal, but then again, your call could be routed all over the carribean.
From the UK, I would Guess that your call would make its way over to the NYC area via one
of the 7 fiber optic cables connection the North East USA to England, and then to Florida.
It is also possible for the call to go eastern towards europe, and then back out to the
atlantic, where it will connect to the carribien, then again, it could go to Bermuda, and
Sattelite or Microwave its way to the carribien.
Signalling path:
/---------------\
| US/Canada |
\---------------/
|
|
|
West Palm Beach, FL
|
Columbus2 Fiber optic link--------> / \
submarine cable / \ <---------------Florida-Jamaica Fiber link
/ \ submarine cable
Cancun, Kingston, Jamaica
Mexico \
| \<--------Jamaica-Panama Fiber link
| \ submarine cable
| \
Various paths ------>\ Panama
via landlines/ \ /
microwave thru \ /
Mexico/Guatemala \ / <---various paths through
\ / landlines/microwave thru
\ / Panama, Costa Rica, Honduras
/---------\
| Belize |
\---------/
(3)
Signalling information:
I am pretty sure that Belize is a CCITT5/R1 hybrid system, but it also has some digtital
switching somewhere, digtal c5 on some, if not all by now. The international gateway
does accept analog (inband) signalling however, which is where the fun comes in.
Depending on the route, you could ocassionaly get an SS7 trunk into Belize, but that
almost never happens(as of 6/02).
Enter Belize blueboxing: sending your own clear forward, and seizing your own trunk for
dialing away. This is theoretically possible since Belize definetly is a ccitt5 country,
which is boxable. However, i have yet to successfully dialout on KP1 or KP2, although I
have seized a trunk a few times. The timings for this system really change all the time,
however they are usually very fast, with no pause inbetween the Clear Forward and Seize
tones. For those of you with bad memories, Clr Fwd is 2400/2600hz mixture, and Seize is
2400hz. These are for ccitt5 international signalling specifically. Theres PLENTY other
files on c5, so i wont elaborate.
Most of the time i can't get even a successful seize, however, the switch does quirky
things after blast tones such as:
-silence, blast again, busy signal, blast again, silence, etc. etc
-blast tones, single pleep back
-blast tones, click, pleep
*double pleep is successful trunk seize
Now you can't really do anything if you happen to get those responses, but I found them
interesting. You really are talking one on one with the switch.
(4)
End Notes:
-Belize is always changing their systems, but they still remain to have inband signalling,
so don't give up.
-AT&T trunk is supersensitive in detecting 2600/2400 tones, i suggest MCI or Sprint.
-Belize doesn't seem like it's that practical of a country to bluebox INTO and call out
from its internal switches. It could prove useful if you wanted to bluebox a chain of
countries however, since the international gateway is analogue, the country's internal
digital switches won't be touched, so your blueboxing hopefully won't be messed up.
-Sources of help
'The Carribean PSTN' by dynamics of 809 crew
'worldcell.com'
cuebiz, lucky225, and engel