We're running mostly analog phones, but have several i2004 IP phones with Nortel BCM50 and can only access 5 our our 6 lines since 1 line slot is used for I/C. My understanding is that the i2004 phones provide an additional menu to access a 2nd set of lines by hitting outbox/shift key. My phones do have the shift key, but do not access a 2nd menu of lines. The phones are not on the same Firmware version - some are on 0604DBG, some on 0602B65 and one on 0604D4B.
Any help on enabling the 2nd menu in order to have access to our 6th line would be appreciated. -J