Determining Cch Link To Send Messages - NEC UNIVERGE SV9300 Networking Manual

Determining CCH Link to Send Messages

Each system CPU must be programmed with the proper information indicating to which CCH (in its own
system) every other office in the network is connected. This is required for providing inter-office services
such as Call Back, and Busy Verification when using CCIS. In each system, CMA8 is used to inform the
local CPU which system is connected through which CCH. This is extremely important, not only for where
two switches are connected to each other, but also for networks in which tandem signaling is used.
Example 1:
PC: 00001
CCH00
A
• Data Assignment of Office A
Command Code
CMA8
• Data Assignment of Office B
Command Code
CMA8
PC: 00002
B
CCH01 CCH00
1st Data 2nd Data
00002 00
00003 00
00004 00
1st Data 2nd Data
00001 01
00003 00
00004 00
1-24
NETWORK STRUCTURE CONSIDERATIONS
CCH00
PC: 00003
CCH01 CCH00
C
A/B/C: Office (PBX)
CCH : Common Channel
PC
Assign the data to make a CCH link with Office
B via CCH00.
Assign the data to make a CCH link with Office
C via CCH00, and make a CCH link with Of-
fice A via CCH01.
Chapter 1 CCIS FEATURES
PC: 00004
D
Handler
: Point Code
Remarks
Remarks
NWA-088654-001 Rev.1.0
94ch1001.fm