3Com S27x, S26x, S24x installation manual Index-3

transceiver 3-23Installing

T1 dual port digital PBX interface card 3-17

INT

providing clock to the network 3-7

J

Jumpers

on -48V ringer/power supply card definitions 1-38

installing 1-38locations 1-38

on DSPM/E&M card defaults 1-29definitions 1-29

for UK complex and two-wire Germany complex impedance 1-30

installing 1-31locations 1-31on DSPM/SM card installing 1-24locations 1-24

L

LAN Connection 3-22LEDs 1-11

DSPM/E&M card 1-28DSPM/FXS card 1-34, 1-36

E1 dual port digital PBX interface card 1-22Lithium battery 4-14

removing/replacing 4-14

LL

local loopback 3-8Loopback 3-10

M

Mesh Network cabling 3-27diagram 3-28

Motherboard 1-12, 3-3

and SDB cable information A-2DIP switches 3-3

expansion slots 1-14ports 1-12replacing 4-12switches 3-11

N

Network Port 1-14

network supplier support D-2

NIS

not in service 3-8

Node

restarts 3-24warmstart 3-24

Node coldstart 3-24Node statistics 3-11

Numeric LED Display 1-11, C-1

O

online technical services D-1Operating Environment 2-2Ordering connections

facility interface code 1-45interface type 1-45service code 1-45USOC jack connector 1-45

Output signals CL 3-9CLK 3-9IDL 3-9RS 3-8

P

Parameters

T1/E1 ports 5-7

PathBuilder S24x, 26x, and 27x switch application examples 1-3description 1-1

PathBuilder S24x, 26x, and 27x Switch Backplane 1-16

PathBuilder S24x, 26x, and 27x switch Cable Information A-1

PathBuilder S24x, 26x, and 27x switch cards removing/replacing 4-9

PathBuilder S24x, 26x, and 27x Switch Motherboard 1-12

PathBuilder S24x, 26x, and 27x switch Motherboard replacing 4-12

PathBuilder S24x, 26x, and 27x switch Physical Dimensions B-1

Pedestal base remove 2-10

Performance Branch Node Example 1-3Pinouts A-1

Port

pinouts A-1Ports 1-12

function 1-15network 1-14numbers 1-14serial 1-14statistics 3-11

Power LED 1-11

Power Requirements B-1

Index-3