COMSPHERE DualFlow Data Service Units
Addressing the Unit
A unique address must be assigned to each control and tributary DSU in your network. You can assign an address within the range of 1 through 255.
NOTE
Do not assign the number 192 as a network address. This number is reserved as a broadcast address.
The DBM requires a separate address, which is automatically assigned by the DSU. The address assigned a DBM is the DSU's address, plus 1 (e.g., if the DSU's address is 1, the assigned DBM address will be 2).
NOTE
The numbers 191 and 255 cannot be assigned to a DSU that has a DBM. However, addresses can be assigned in any order; they do not have to be sequential.
It is recommended that only
Tributary DSU Addressing
Tributary DSU addresses are
The 6700 or 6800 Series NMS accesses the DSU via its network address. To access a tributary DSU, the NMS first addresses the control, then the tributary. An address issued from the NMS takes the format of control channel/control DBM network address/tributary network address. This is called
Figure 2-8 shows an example of DSU and DBM addressing, as well as link-level network addressing.
Refer to Chapter 4 to learn how to set the DSU's network address.
Verifying Operation and Testing Connections
Verification testing should be performed after any installation.
After installing and configuring the circuit (including control and tributary DSUs, the DDS network, the DBMs and their dial connections), perform the following series of tests from the control DSU to verify network operation (using either the DCP or NMS).
Next, test the tributary DBM for dial tone, and verify that the DSU can place and receive calls.
Figure 2-8. Addressing Example
December 1996 |
