User manual

T1 Modem Bank

Modem Card Removal and Installation/Replacement

Modem Card Removal

Modem cards can be “hot swapped”, meaning that no system reset is needed after a modem card is pulled out and

replaced with another modem card. This does not mean that modem boards should be moved from slot to slot

without cause, since the motherboard senses and stores information regarding a modem board’s correct location.

• Do not remove a modem card for any reason when the activity LEDs labeled

ONL1-ONL6 are lit. These LEDs indicate the card is in use or “off-hook”.

• Wear a grounding strap during this procedure to prevent electrical discharge.

• The T1 Modem Bank will “busy out” unavailable lines if fewer than four modem

cards are installed in the card cage.

• The maximum number of modem cards that can be installed is four. The faceplate

next to the line card is blank because a modem card can not be installed in this

location. Blank faceplates can also be installed over any of the four possible

modem card locations which do not contain modem cards.