Siemens ET1 Series Informações Técnicas descarregar pdf (Página 14)

INSTALLATION

2-6

2.5.1 E1 CH SEL: Select E1 port for NMC 9000 operates

This menu select one of the available E1 ports for operations on NMC

9000 front panel. As this function only works on multiple E1 capable

modules, this item takes no effect on model ET1.

Configurable objects:

E1 Channel 1: Select the first E1 port for the control operations on

NMC 9000.

E1 Channel 2: Select the second E1 port of ET2 card module for the

control operations on NMC 9000.

(Not available for model ET1)

2.5.2 CONFIG E1: E1 main link parameters

Below are functional descriptions for all configurable objects in

‘CONFIG E1’ group. Refer to table 2-1 for all available options.

Configurable objects:

CRC: Turn on or off for CRC4 function. This option must

be identical on both end of E1 link or the link will not

work properly.

ALARM GEN: Select the method to generate alarm signal to notice

remote E1 equipment. Alarm signal will be generated

if any of following three conditions present:

1. ETx can not synchronize with remote from received frames.

2. Receipt of AIS on E1 interface. (all ‘1’s)

3. No signal detected on E1 interface.

E BIT: Switch on/off E bit function. E bit is the REBE bit

defined as bit 1 of frame 13/15 in time slot 0, it is

used to inform the remote system for local CRC error

event.

TX/RX MODE:Set E1 connection mode of TX/RX interfaces to CCS

or CAS mode. The value for TX and RX must be

identical to each other or the system will not work

properly.

Idle Ch. Sel. A/B/C/D : Idle channel map for channel 0 to channel

31. Channels in Idle State will not be

allowed to pass any data.

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