| Contact GRC
DFW/Texas
940-591-6805
Jacksonville Fl
904-412-3009
Email GRC
|
|
| Type |
Rate |
Additional info |
ISDN: |
| BRI |
128Kbps |
ISDN 2 64KB+1 16KD |
| PRI(na) |
1.480Mbps |
ISDN 23B+1D (all 64K) ~ T1 |
| PRI(eur) |
1.930Mbps |
ISDN 30B+1D (all 64K) ~ E1 |
|
|
|
xDSL: |
| ADSL |
640+Kbps up/
1.544+Mbps down |
Asymmetric Digital Subscriber Line
Nonmatching send/receive transmission rates |
| HDSL |
784+Kbps |
Typically matching send/receive rates, can
reach T1 speeds |
| SDSL |
768Kbps |
Single Line Digital Subscriber Line aka
HDSL2 |
| VDSL |
19.2Mbps up/
51.84Mbps down |
Very high rate Digital Subscriber Line
|
| IDSL |
128Kbps |
Effectively ISDN over low quality non-CAT5
copper
with no voice capabilities |
| RADSL |
ADSL |
Rate Adaptive Digital Subscriber Line
ADSL that automatically adapts rates depending on
transmission medium quality |
| ANSI T1.413 |
ADSL |
Official name for ADSL |
|
|
|
T Carrier: |
| T1 |
1.544Mbps |
24 DS0 channels, equivalent to 1 DS1 |
| T1C |
3.152Mbps |
48 channels |
| T2 |
6.312Mbps |
96 channels |
| T3 |
44.736Mbps |
672 channels |
| T4 |
274.176Mbs |
4032 channels |
| E1 |
2.048Mbps |
30 64Kbps channels + 2 64Kbps D, aka
European T1 |
| DS0 |
64Kbps |
1 channel, same rate in NA, Japan, and
Europe |
| DS1 |
1.544Mbps |
24 channels (T1) |
| DS1C |
3.152Mbps |
48 channels (T1C) |
| DS2 |
6.312Mbps |
96 channels (T2) |
| DS3 |
44.736Mbps |
672 channels (T3) |
| DS4 |
274.176Mbps |
4032 channels (T4) |
| DS1 Japan |
1.544Mbps |
24 channels |
| DS2 Japan |
6.312Mbps |
96 channels |
| DS3 Japan |
32.064Mbps |
480 channels |
| DS4 Japan |
97.728Mbps |
1440 channels |
| DS5 Japan |
400.352Mbps |
5760 channels |
| DS1 Euro |
2.048Mbps |
30 channels + 2 D channels (E1) |
| DS2 Euro |
8.448Mbps |
120 channels + 2 D |
| DS3 Euro |
34.368Mbps |
480 channels + 2 D |
| DS4 Euro |
139.268Mbps |
1920 channels + 2 D |
| DS5 Euro |
565.148Mbps |
7680 channels + 2 D |
|
|
|
Optical Carrier: |
| OC-1 |
51.48Mbps |
Optical Carrier SONET - All OC-n
are 51.48*n Mbps |
| OC-3 |
155.52Mbps |
Optical Carrier SONET |
| OC-12 |
622.08Mbps |
Optical Carrier SONET |
| OC-48 |
2.4Gbps |
Optical Carrier SONET |
| OC-192 |
9.6Gbps |
Optical Carrier SONET |
| OC-256 |
13.1Gbps |
Optical Carrier SONET |
| OC-768 |
40Gbps |
Optical Carrier SONET |
|
| Switched56 |
56Kbps |
|
| Accunet |
56Kbps |
AT&T |
|
|
|
| Centronics Parallel |
200KB/s |
Standard PC parallel port |
| EPP |
400KB/s |
Enhanced Parallel Port |
| ECP |
2MB/s |
Extended Capabilities Parallel Port bidir,
8bit |
| HIPPI-32 |
100MB/s |
ANSI, 32 bit parallel |
| HIPPI-64 |
200MB/s |
ANSI, 64 bit parallel |
| IEEE 1284 |
2Mbps |
high speed centronics-like parallel |
| ESCON® |
10MB/s |
IBM, Fiber, max 5.6 miles |
| P1394 |
400Mbps |
Firewire™, 63 devices max |
| USB |
12Mbps |
4 wire serial, 128 devices max |
|
|
|
| 10Base2 |
10MB/s |
Thin coax 607 feet (bus) |
| 10Base5 |
10MB/s |
Thick coax 1640 feet (bus) |
| 10BaseT |
10MB/s |
Twisted Pair 328 feet (star) |
| 10BaseF |
10MB/s |
Fiber 1.2 miles (star) |
| 100BaseT |
100MB/s |
Twisted Pair |
|
|
|
| Arcnet® |
2.5Mbps |
|
| CDPD |
19.2Kbps |
Cellular Digital Packet Data |
| DDS |
56Kbps |
AT&T |
| FDDI |
100Mbps |
ANSI, Fiber, 2 Kilometers max |
| FDSE |
20Mbps |
Full Duplex Switched Ethernet |
| G.703 |
2.048Mbps |
|
| HSSI |
53Mbps |
|
| Lattisnet® |
10 Mbps |
Synoptics ethernet |
| LocalTalk® |
230.4Kbps |
twisted pair |
| Starlan |
1Mbps |
AT&T twisted pair |
| Type A Coax |
2.35Mbps |
IBM, coax |
Data collected from various sources including: Newton's Telecom Dictionary
13th ed., Black Box..., Byte Magazine, PC Magazine, ...
Using a file size of 1,000,000,000.00 bytes (1,000.00 Megabytes)
the following download speeds are projected using standard calculations and demonstrating
bandwidth use with a T1(1.5Mbps) as the standard.. Notice the faster OC speeds are ideal
for voice, video, applications mirroring, disaster rocovery hotsite because the speeds of
mirroring systems is relatively instantaneous. Using a private dark fiber MAN not only
guarantees security of the system but the speed is only limited to the equipment at the
end users site.
| Connection |
Speed |
(Y:D:H:M:S) |
Difference |
| 56 K |
56,000 bps |
1:15:40:57 |
96% slower |
| 128 K |
128,000 bps |
17:21:40 |
91% slower |
| 256 K |
256,000 bps |
8:40:50 |
83% slower |
| 512 K |
512,000 bps |
4:20:25 |
66% slower |
| 768 K |
768,000 bps |
2:53:37 |
50% slower |
| T1, DS-1 |
1.544 Mbps |
1:26:21 |
Baseline |
| T3, DS-3 |
44.736 Mbps |
2:59 |
2,798%
faster |
| OC-3 |
155.520 Mbps |
51 |
9,973%
faster |
| OC-12 |
622.080 Mbps |
13 |
40,191%
faster |
| OC-48 |
2.488 Gbps |
3 |
161,040%
faster |
| OC-192 |
10 Gbps |
1 |
647,569%
faster |
|
