48
24
up to 670 (voice). If its t1, then only 28.
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
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.
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.
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.
That's a T1.
There are 24 T1's in a T1. www.intelletrace.com