CTEL4 – Analog Telephony Card

The CTEL4 card is Type 2 hardware.

Type 2 hardware provides new cables and connectors between the I/O cards and main boards in Cores and I/O Frames. Due to this change, the Type 2 hardware is not physically compatible with the older hardware. You can still integrate the new I/O Frames and Cores in the same system with older hardware, but the I/O cards are not interchangeable. Type 2 hardware can be identified by a yellow label on the back of the Core and I/O Frame, and the bottom of the I/O cards.

Due to electrical current limitations imposed on telephony devices, there is a limit to the number of CTEL4 cards that can be installed in Q-SYS host hardware.

Host Hardware	Available I/O Slots	Max CTEL4 Cards Allowed
Q-SYS Core 510 Series	8	3
Q-SYS I/O Frame	4	3
Q-SYS Core 3100, Core 1100	1	1

Note: The CTEL4 card limits do not affect other Q-SYS I/O cards. All other Q-SYS I/O cards (in any combination) may be installed into a host product alongside the supported CTEL4 maximums.

The POTS Controller component controls the features of the Q-SYS interface with a Plain Old Telephone Service (POTS).

If you are connecting to an analog phone system, you can connect from the wall RJ-11 jack directly to Q-SYS hardware supporting a POTS connection:

• The Core 110f and Core 110c provide a single RJ-11 telephone connection.
• The CTEL4 – Analog Telephony Card provides four RJ-11 telephone connections.

If you are connecting to a digital system, you can use an FXO Gateway that has an analog POTS connection and a network connection. For more information, visit the POTS Controller topic.

Technical Specifications
Input / Output Impedance	600 ohms, nominal
Frequency Response	300Hz - 3.3kHz +/- 0.5dB
Dynamic Range	54 dB
Station Port Compatibility	Two-wire ring start
Ringer Equivalence	CTEL4: 0.0B Core 110f: 0.1 Core 11c: 0.1
Electronic or 1A2 Line Key	No1
PABX Loop	No1
Trunk Port Compatibility	Two-wire loop start
Number of phone lines	CTEL4: 4 lines Core 110f: 1 line Core 110c: 1 line
Loop Current Interruption (CPC Pulse)	Interpreted as line disconnect

1. Each Q-SYS phone line is meant to be connected to a single PSTN line (FXO). It does not control a multi-line PBX or interface with an FXS.