Lucent Technologies CBX 3500 Installation Guide

Installing the CBX 500 Switch
Connecting External Clock Inputs and Outputs
Beta Draft Confidential
CBX 500 Multiservice WAN Switch Hardware Installation Guide 4/5/034-17
E1 Clock Connection
The E1 timing inputs work with E1 timing references that comply with the ITU-T
G.703, Section 6 standard. The E1 timing output takes its timing source from a
selected active SP clock source configured via the NMS.
The SPA panel also contains three 75-ohm BNC connectors for connection to:
• An external E1 clock input
• A redundant E1 clock input
• An E1 clock output
You can configure the operation mode (T1 or E1) through the NMS. For instructions,
see the B-STDX, CBX, and GX Switch Module Configuration Guide.
Figure 4-12 shows the location of the clock inputs/outputs on the SPA module.
Figure 4-12. External Clock Inputs and Clock Outputs
Note – Through the NMS software, you can configure the clock sources and
clock-source priorities. For example, you can adjust the line build-outs over a range of
0 to 655 feet for T1 timing outputs. You cannot adjust the line build-outs for E1 timing
outputs.
E1 Clock
Inputs
E1 Clock
Output
T1 Clock
Inputs
T1 Clock
Output

Lucent Technologies CBX 3500 Specifications

General

Brand	Lucent Technologies
Model	CBX 3500
Category	Switch
Language	English