Cart
0
Product
Products
(empty)
No products
To be determined
Shipping
$0.00
Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart.
There is 1 item in your cart.
Total products
Total shipping
To be determined
Total
Sale!
View larger
View larger
ITU-T R.21
New product
ITU-T R.21
9600 bit/s modem standardized for use in the telegraph TDM systemMore info
| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 35.180 : IT terminal and other peripheral equipment
|
| Number of pages | 5 |
| Year | 1990 |
| Document history | |
| Country | International |
| Keyword | CCITT R.21;ITU-T 21;21 |