24
up to 670 (voice). If its t1, then only 28.
An OC3 breaks down to three DS3's. A DS3 Breaks down to 28 T1's. Therefore there are 84 T1's on an OC3. If you go one step further there are 672 DS0's on a DS3 or 2016 DS0's on an OC3. a DS0 is a 64k Channel equal to a single POTS line. http://techblog.intelletrace.com/what-is-a-ds3-hub/
ISDN VS T1 Both are Digital, T1 is 24 Channels ISDN is 2. Each Channel is 64K ISDN = 2 Voice or 128Kbps T1 = 23 Voice Channels or 1.5Mbps www.intelletrace.com
An OC12 is the equivalent of 4 OC3's or 12 DS3's. A DS3 Breaks down to 28 T1's. Therefore there are 336 T1's on an OC3. If you go one step further there are 672 DS0's on a DS3 or 8064 DS0's on an OC12. a DS0 is a 64k Channel equal to a single POTS line. http://techblog.intelletrace.com/what-is-a-ds3-hub/
In telecommunications, T-carrier, sometimes abbreviated as T-CXR, is the generic designator for any of several digitally multiplexed telecommunications carrier systems originally developed by Bell Labs and used in North America, Japan, and Korea.The basic unit of the T-carrier system is the DS0, which has a transmission rate of 64 kbit/s, and is commonly used for voice and data.www.intelletrace.com
fractional T1
Equivalent of T1 in European telecom PDH is E1. which has 32 channels and aggregate rate of 2.048Mbps. - Neeraj Sharma
544,638,374,283,290,000,000,000,000,000,000. te he!
The RAD T1 access is a physical layer protocol that is used for leased line transmissions. T1 lines can carry twenty four 56 kbps or 64 kbps channels.
In North American a T1 line carries signals at 1.544 Mbps (24 channels at 64Kbps). E1 is the European format for digital transmission. E1 carries signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling). T1 and E1 lines may be interconnected for international use.
A T1 line can carry 24 digitized voice channels, or it can carry data at a rate of 1.544 megabits per second. Providers that offer T1 service include T1 Shopper, Century Link, and Earth Link Business.
Both are Digital An isdn is 128Kbps and has two "B" channels and 1 "D" channel. A T1 is 1.5 Mbps and has either 24 channels for Data or 23 "B" channels and 1 "D" channel when used for Voice Typicaly called a PRI when used for Voice.