NEC Electra Elite DTU 16D-2 Corded Phone "ip1ww 24txh" Questions

...IP1WW-24TXH with 24lines. I want to know the procedure of how to barge into an extension when busy. Are you sure about the model number? What about a model name? Check the website below and see if ...

...IP1WW-24TXH I want to have working detail for the phone I purchased for our office which is Brand NEC model IP1WW-24TXH with 24lines. I want to know the procedure of how to barge into an extension ...