ISDN Telephone Extension Modular ShiverPeaks 70230-8/4 — 8/4 Ports, Western (RJ) Connector

The ShiverPeaks ISDN Telephone Extension Modular 70230-8/4 is an 8/4 port extension module designed for adding ISDN line or handset connections in telephony systems. Featuring a Western (RJ) connector interface, this module is intended for integration with PBX systems, terminal devices or telecom racks to increase the number of available ISDN ports while maintaining standard wiring and compatibility with existing ISDN cabling.

Advantages

This modular extension provides a compact way to expand ISDN connectivity without extensive rewiring. The Western (RJ) connector ensures straightforward plug-and-play installation with standard ISDN cables. Its 8/4 port configuration supports several simultaneous connections in a small form factor, making it suitable for environments where space and cable management are important. The design focuses on maintaining signal integrity for voice and low-speed ISDN data applications.

Suitable for

• Expanding ISDN port count on PBX systems in small offices
• Adding handset or terminal connections in telecom racks
• Temporary or permanent extension of ISDN lines for voice/data
• Integration with existing ISDN cabling and RJ connectors

Key specifications

• Port configuration: 8/4 ports for ISDN line and handset connections
• Connector type: Western (RJ) standard connector compatible with ISDN cabling
• Application: Voice and ISDN data transmission
• Form factor: Modular extension suitable for telecom racks and PBX integration

How to use

Install the module into the designated expansion slot or mount it in the telecom rack according to the telephony system manufacturer’s instructions. Connect existing ISDN cables to the Western (RJ) connectors on the extension and secure connections to the PBX or terminal devices. Verify line assignment and configuration in the PBX or terminal settings, then test each connected handset or device to confirm voice and data transmission. Follow any grounding and cable management practices used in your installation environment to preserve signal quality.

Recommendations

Use shielded, standard-compliant ISDN cabling and keep cable runs within recommended lengths to maintain signal integrity. Coordinate port assignments with your PBX configuration and perform functional testing after installation. If integrating into a rack or dense cable environment, plan cable routing to avoid excessive bending or interference.