TY  - BOOK
AU  - Held,Gilbert
TI  - Voice and data internetworking with IP and frame relay
SN  - 0072122161
PY  - 2000///
CY  - New York
PB  - McGraw Hill
KW  - TCP/IP (Computer network protocol)
KW  - Digital telephone systems
KW  - Computer networks
KW  - Data transmission systems
ER  -