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T1, E1, and Digital Voice Modules Passport 4400 Hardware Installation Manual
5-15
To ensure that your unit is equipped with the External Synchronization feature,
check the part number tag on the face plate of the Ethernet Base Module. All
units shipped from the factory after January 2000 to non-North American
locations will have this modification. The tag should read NTAU01CA Revision
level 05 (or higher). If there is any doubt about the unit you have, contact Nortel
Networks Customer Service and refer to ECO E400399. They will let you know
if the revision level of your unit includes the necessary features.
Note:
If this module is installed in a unit that does not have a wiring
change, it will revert to its internal clock and otherwise
perform all other functions.
Note:
The connections will depend on the specific site
requirements. If you are not sure of the connections required
for the Passport 4400 unit, consult your system administrator
or refer to the following:
• Appendix A, Cable Diagrams.
• Appendix B, Agency and Telephone Company Requirements.