2.29 E1 Line Service Features
2.29.1 E1 Line Service
Description
The
E1 line carries thirty 64 kbps-voice channels at 2.048 Mbps transmission speed as a trunk or private line.
Voice is digitised by Pulse Code Modulation (PCM).
1. Channel Type
The E1 card supports only DR2 (Digital System R2). Only DR2 can be assigned to the 30 channels of the
E1 card.
2. E1 Features
The following table shows the features available for each channel type:
[Feature Table]
Channel Type
(1) (2) (3) (4) (5)
TIE DID DIL ANI Call Charge Information
DR2
ü ü ü
*1
ü
ü: Available
*1
Receiving Dial Mode should be MFC
-R2.
[Explanation]
Number in the
Table
Feature Description
(1) Direct Inward Dialling
(DID)
Refer to the DID feature. (® 2.1.1.3 Direct Inward
Dialling
(DID)/Direct Dialling In (DDI))
(2) Direct In Line (DIL)
Refer to the DIL feature. (® 2.1.1.2 Direct In Line
(DIL))
(3) Automatic Number
Identification
(ANI)
Outgoing ANI:
Sends the caller’s number to the E1 line. The sending
method is the same as ISDN CLIP service. (®
4.1.2.2 Calling/Connected Line Identification
Presentation (CLIP/COLP))
Incoming ANI:
Receives the caller’s number from the E1 line. When
the
ANI number is received, it can be treated the same
as a Caller ID number. (® 2.19.1 Caller ID)
(4) Call Charge
Information
The call charge meter pulses can be received during a
conversation. (® 2.22.3 Call Charge Services
)
Conditions
• If an E1 line is used as a trunk, the channel type depends on the contract with the telephone company.
318 Feature Guide
2.29.1 E1 Line Service
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