MORE performance - MORE flexibility - LARGER system expansion! .. via update module for existing ES 770 IT and ES 730 IT systems. Using/replacing the module results in the same performance options as with an ES 730 IT plus or ES 770 IT plus! This means that the ES 730 IT plus can manage 60 users with 90 devices and the ES 770 IT plus 200 users with 120 devices (regardless of the device type)! In addition to 2 network interfaces (optional network separation possible when using the ETH Plus license), the module can manage up to 64 IP channels (without the need for additional hardware expansion) and thus represents the maximum limit of existing/possible IP modules in existing systems. Usage variants of the channels: SIP external (SIP provider), SIP internal (SIP devices, AGFEO DECT IP), ASIP (AGFEO ST for IP interface). After using the ES 7xx Upgrade Kit, existing IP modules can no longer be used in this system (IP channel license transfer possible when exchanging for IP modules. Replaced modules can continue to be used in other systems.)!