Q Does this module need regular upgrades?
A The PA-4E1G/120 may require occasional firmware updates, which can be managed through your Cisco router's software.
Q Are there alternative products available?
A Alternatives include the PA-8E1G/120 for higher port density or the PA-4E1G/75 for different impedance requirements.
Q What are common troubleshooting steps?
A Check cable connections, ensure proper slot seating, and verify configuration settings in the router's interface.
Q Which accessories are needed?
A You may need E1 cables with 120-ohm resistance and a compatible router chassis like the Cisco 7200 Series.