- 1/2 RU, 2 Ch, Partyline IP communications
- Interface : Two channel Partyline IP
- Communications interface, 1/2 RU, for extending
INV#175159
- 8 Ch, 4-Wire with GPIO IP interface: Eight
- Channel 4-Wire IP communications interface for
- Extending 4-Wire audio communications and call
INV#199665
- 8 Ch, 4-Wire with GPIO & partyline IP interface:
- Eight channel 4-Wire with GPIO & Partyline IP
- Communications interface for extending 4-Wire
INV#199664
- 2 Ch, 4-Wire GPIO IP interface: Two channel
- 4-Wire with General Purpose input and relay
- Output IP communications interface for extending
INV#199663
- 1/2 RU, 2 Ch, 4-Wire IP communications interface
- : Two channel 4-Wire IP communications interface,
- 1/2 RU, for extending Partyline audio
INV#175160
