Typical E&M Card Switch Definitions; Typical E&M Card Switch Settings - Zhone IMACS 8000 User Manual

E&M Card
Table 11-1. Typical E&M Card Switch Definitions
Switch
S1 Source of the E (recEive or Earth) lead; can be internal (INT) or external
(EXT).
S2 Type of internal source for the E lead; either battery (-48 VDC) or ground
(GND).
S3 Type of internal source for the M (transMit or Magnetic) lead; either battery
(-48 VDC) or ground (GND).
S4 Normal state of the E lead; either grounded (ON) or open (OFF). Each card
port number is designated on the eight-position DIP switch. All eight switches
must be set to the same position (all ON or all OFF).
E&M Type
I
II
IV
V
Factory Settings (default)
*Indicates that the port is attached to a device that generates signaling, such as a PBX.
**Indicates that the port is attached to a device that does not generate signaling, such as a
channel bank. In this case, the integrated access system emulates a PBX and generates
signaling. This configuration is also known as a Tandem E&M or Pulse Link Repeater (PLR)
application.
Voice Cards
Table 11-2. Typical E&M Card Switch Settings
Direction S1
Normal E&M* INT
Trunk** INT
Normal E&M* EXT
Trunk** EXT
Normal E&M* EXT
Trunk** EXT
Normal E&M* INT
Trunk** INT
INT
E&M Card Descriptions
Definition
S2 S3 S4 (all switches)
GND GND OFF
BAT BAT ON
BAT GND OFF
GND BAT OFF
GND BAT OFF
GND BAT OFF
GND BAT OFF
GND BAT OFF
GND GND OFF
11-3