Table of Contents
Advertisement
RECOMMENDED OPERATING PROTOCOLS
The ISU 512 supports BONDING Mode 1. For applications such as videocon-
ferencing, in which the unit needs to interoperate with two SW56 lines or one
dual-port ISDN device, the 2 x clear channel protocol (dual-port mode) is used.
The ISU 512 automatically uses the 2 x clear channel protocol whenever it does
not find a BONDING partner. The first call (incoming or outgoing) connects
to the V.35 port in 2 x clear channel protocol. The second call (incoming or out-
going) connects to the RS-530 port. An RS-530 to V.35 cable (part number
1200072L1) may be required in some applications. Table 1-A lists the synchro-
nous rates supported by the ISU 512, and the number of interfaces required
from the telephone company to accomplish the rate.
Rates
( S y n c h r o n o u s )
1x56K
1x64K
2x56K
2x64K
3x56K
3x64K
4x56K
4x64K
5x56K
5x64K
6x56K
6x64K
7x56K
7x64K
8x56K
8x64K
61202.086L1-1
Chapter 1: Understanding ISDN and the ISU 512
Rate Adaption Method
BONDING/Clear Channel
BONDING/Clear Channel
BONDING/2 x Clear Channel Protocol
BONDING/2 x Clear Channel Protocol
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
BONDING
ISU 512 User Manual
Table 1-A
ISU 512 Synchronous Rates
IFCs
Required
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
Advertisement
Table of Contents
