There are two indicators on the 4E1 interface to indicate the network connection, as shown in
Table 2-11
Status indicators on the 4E1 interface
Indicator Status
Connection Status
The orange indicator is
on.
The lines are connected and the clocks on the lines are synchronous.
The green indicator is
on.
A call can be placed.
2.6.2 Setting 4E1/E1 Parameters
If 4E1 lines or an E1 line is used for video communication, 4E1/E1 parameters, such as the
account, password, clock mode, signaling mode, and sensitivity, must be set.
Prerequisites
Before setting 4E1/E1 parameters, ensure that an E1 line or 4E1 lines are used by the terminal.
Context
If 4E1 lines are faulty and if automatic backup is available, the terminal uses the backup line
preferentially, and then reduces the conference rate automatically. The terminal can perform
automatic backup, automatic rate reduction, or automatic rate increase in one second. During
the process, erratic display may occur on the video and noise may exist. After two seconds,
however, the video and the audio will be recovered and the conference rate remains unchanged.
Procedure
Step 1
Choose
Settings
>
Network
>
4E1/E1
, and then set the parameters listed in
.
Table 2-12
4E1/E1 parameters
Parameter
Description
Signaling mode
l
To use channel associated signaling, you can select
CAS
.
l
To use common channel signaling, you can select
CCS
.
Cyclic redundancy checking (CRC) is used to test the network condition.
The CRC result indicates the frame error rate. When an option that
contains 4 CRC is selected, the terminal tests the network for bit errors.
HUAWEI 9000 HD Video Terminal
Administrator Guide
2 Network
Issue 09 (2012-09-03)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
38