2.7 Connection of Extensions

2.7.1 Maximum Cabling Distance of the Extension Wiring (Twisted Cable)

DPT

APT

DSS Console

SLT

DHLC8 Card

MSLC16, SLC16, SLC8 Cards

DLC16, DLC8 Cards

" indicates that the extension card is available for the terminal.

2.7.2 Parallel Connection of the Extensions

With APT

Any SLT can be connected in parallel with an APT as follows:

With DPT

Any SLT can be connected in parallel with a DPT as follows:

Notes
	•	In addition to an SLT, an answering machine, a fax machine or a modem (PC) can be connected in parallel with APTs and DPTs.
	•	If the eXtra Device Port (XDP) mode is enabled through system programming, parallel connection is not possible. Refer to "1.10.9 Paralleled Telephone" and "2.1.1 Extension Port Configuration" in the Feature Guide for further information.

2.7.3 Extra Device Port (XDP) Connection

Any SLT can be connected in parallel with DPT as follows:

With KX-T7600 Series DPT

With Other DPTs

2.7.4 First Party Call Control CTI Connection

CTI connection between a PC and a KX-T7633/T7636 DPT provides the first party call control. The CTI connection is made via USB interface (version 1.1), and uses the CSTA Phase 3 protocol.

A USB Module (KX-T7601) must be connected to the KX-T7633/T7636 DPT.

Note
	The operating system of the PC required for first party call control depends on your CTI application software. For details, refer to the manual for your CTI application software.

Note
	Maximum length of the USB cable is 3 m (9.8 ft).