Huawei Technologies Co. Ltd EM820W 사용자 설명서
Service Type
Description
Co-group pickup
Allows users in the same group to answer
calls for each other on their own phones. For
example, when the phone of user A rings, user
B in the same group can dial the service
access code plus user A's phone number to
answer the call.
calls for each other on their own phones. For
example, when the phone of user A rings, user
B in the same group can dial the service
access code plus user A's phone number to
answer the call.
Simultaneous ringing
When a calling party dials the access number
of a simultaneous ringing group, all member
phones in the group ring simultaneously, and
the called party can answer the call using any
ringing phone.
of a simultaneous ringing group, all member
phones in the group ring simultaneously, and
the called party can answer the call using any
ringing phone.
Sequential ringing
When a calling party dials the access number
of a sequential ringing group, member phones
in the group ring in the configured sequence.
of a sequential ringing group, member phones
in the group ring in the configured sequence.
One number link you (ONLY)
When the calling party calls ONLY number
of the called party, multiple terminals of the
called party ring according to the configured
rules, and the called party can select one
terminal to answer the incoming call.
of the called party, multiple terminals of the
called party ring according to the configured
rules, and the called party can select one
terminal to answer the incoming call.
For details about voice features, see Feature Description - Voice.
3.2.2 WAN
WAN uses the interfaces such as Ethernet, E1, T1, ADSL, VDSL, G.SHDSL, CPOS, 3G, and
synchronous/asynchronous serial interfaces. The physical links on these interfaces can run the
FR, PPP, and HDLC protocols.
synchronous/asynchronous serial interfaces. The physical links on these interfaces can run the
FR, PPP, and HDLC protocols.
Frame Relay
Working at the data link layer of the Open System Interconnection (OSI) model, Frame Relay
(FR) uses simple methods to transmit and exchange data. On a frame relay (FR) network, virtual
circuits connect two FR devices. A physical line on the FR network provides multiple VCs. A
VC defines an FR channel by using the data link connection identifier (DLCI), and detects and
maintains the VC status by using the local management interface (LMI).
(FR) uses simple methods to transmit and exchange data. On a frame relay (FR) network, virtual
circuits connect two FR devices. A physical line on the FR network provides multiple VCs. A
VC defines an FR channel by using the data link connection identifier (DLCI), and detects and
maintains the VC status by using the local management interface (LMI).
Multilink frame relay (MFR) is a cost-effective solution provided for FR users. MFR (FRF.16)
implements the multilink frame relay function on the user-to-network interfaces (UNIs).
implements the multilink frame relay function on the user-to-network interfaces (UNIs).
The FR compression technologies compress FR packets to save network bandwidth, reduce
network load, and improve data forwarding on the FR network. The AR supports FRF.9 (FRF.
9 stac) and FRF.20 (FRF.20 IPHC).
network load, and improve data forwarding on the FR network. The AR supports FRF.9 (FRF.
9 stac) and FRF.20 (FRF.20 IPHC).
PPP
The point-to-point protocol (PPP) is used at the data link layer of the OSI model as well as at
the link layer of TCP/IP. PPP transmits data from one point to another through synchronous
links and asynchronous links that support full duplex.
the link layer of TCP/IP. PPP transmits data from one point to another through synchronous
links and asynchronous links that support full duplex.
Huawei AR G3 Series Enterprise Routers
Product Description
Product Description
3 Product Characteristics
Issue 02 (2012-04-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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