Sophisticated digital technology for the connection of Analogue Trunk Lines Technical Information: • Connection for up to 4 Analogue Trunk Lines • CLIP to FSK standard • CLIP to DTMF standard • Upgradable Firmware for exchange line adjustment • Maximum 4 modules per system • AS 4000 only install in master cabinet • Remote maintenance of system and modules via ISDN line or Internet with required module. • Call Cost evaluation not possible on Analogue Trunk Lines • Mixed Trunk mode with analogue, ISDN and or Internet telephony is possible • Will only operate if the AS 40P, AS 4000 and AS 100 IT are fitted with the P 400-1 or P 400–IT respectively • CLIP to analogue extensions will only be supported on this telephone system if the T Module 407 is fitted • AL Module 4504 will NOT replace the connection module.