IP500/IP500 V2 Installation Page 390
15-601042 Issue 25i (03 January 2013)IP Office 8.0
9.16.17 TCM Port (RJ21)
These ports are found on IP500 Digital Station 16A/30A external expansion modules. These are supported by IP500 V2
systems running IP Office Release 7.0 and higher. They are used for supported M-Series and T-Series digital stations.
They are also used for 4100 and 7400 Series phone support by connection to a Digital Mobility Solution system.
Cable lengths up to 305 m (1000 ft) using 0.5mm (24AWG) wires do not require a power booster. For TCM phones,
lengths up to 790 m (2600 ft) are supported if an auxiliary power supply booster is used.
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