AltiGen MAXCS 7.5 Telephony Hardware - Manual (Page 55)

AltiGen MAX1000/MAX2000 Telephony Boards
Telephony Hardware Manual 49
Audio Input and Output Port
Each access board has one audio input port (3.5mm) for connecting a music-on-hold
device; and one audio output port for connecting a paging device.
Please note the following:
• Only one audio input/output source is supported per system.
• The first extension port is shared with audio input/output port (Rx/Tx). Do not wire
an analog phone to the first extension port when one of the audio ports is activated.
Installing Access Boards
To install an access board,
1. Power off the system.
2. Slide the access board into the slot and align it with the card guide.
3. Push the board in completely.
4. Tighten the thumb screws on both sides in a synchronized manner.
Figure 4. Access board installation
OFF Flashing Frame synchronization failed due to one or more of the
following conditions:
Wrong frame type
Wrong line code
Clock not matched, causing massive frame slips
Cable between CSU and T1 port is too long (within 110 feet
is recommended)
CRC checksum error (E1)
Alternating Temporary frame slip in normal operation
OFF OFF No power to the board
LED C
(Green)
LED D
(Red) Status