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SIP = Session Initiation Protocol 15年前已開始開發的
VoIP 語音通話為主之協定, 但這10年間由 H.323
協定主導了 VoIP 發展 (可能是錯誤地主導), H.323
是一種多媒體廣泛協定, 其企圖想包含所有通訊,
圖像, 視像協定, 結果造成了大量不實用封包浪費. 這10年間,
H.323的 "假大空"
浪費了全世界大量網絡及硬體資源 . 近年由 SIP
重振雄風, 燃點新一代 VoIP 語音通話之希望 ! VoSIP
SIP = 專; 精; 簡; 快; 聰明之實用語音通話協定, 請按此多看最新
VoSIP 資料 |
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H.323 Voice Over IP
Gateway |
Single
VoIP Telephone |
IP Star, Inter Star for
own telephone connection |
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Internet
Telephony, also known as IP Telephony, is for any telephony application
that can be enabled across a data network via the Internet TCP/IP &
H.323 Protocol.
Internet Telephony is created by the merging of the
circuit-switch and packet switched world. In the past, real-time voice
information is sent over the Public Switched Telephone Network (PSTN).
With the circuit-switched technology, every call takes up a dedicated
bandwidth. End-to-end calls are established on the basis of a sequence
of dialed digits, and the PSTN dedicates a physical path between
callers. Although the telephone equipment establishes the call path at
the beginning of the call, the path may change between calls, but not
during any specific call.
In comparison with a PSTN, an Internet Protocol (IP) network or
Internet Telephony network has a packet-switched architecture. Devices
transmit data in packets, and the path from end to end can vary within
an established session. In addition to data, packets also contain
addressing information, which routing devices used to send information
to its destination. Routing devices maintain tables which instruct them
how to direct packets. As networking environments change, routing
devices are updated with dynamic protocols.
Traditionally the PSTN was the only network supporting voice
communication. With Internet Telephony, voice, fax, data, and video can
be sent over IP-based packet-switched networks. There are also many
Internet Telephony applications such as web-enabled Interactive Voice
Response (IVR), Unified Messaging, intelligent Private Branch Exchanges
(PBXs) and much more Internet Telephony applications being invented due
to the merging of computer and telephony technology. The term Computer
Telephony Integration (CTI) is now becoming increasing popular and there
will be series of applications, which are now under development, to meet
the growing demands for new technologies.
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Internet
Telephony efficiently improves the use of bandwidth of real-time
voice transmission. |
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Internet
Telephony offers the promise of cost savings through the use of
shared data network resources, such as carrying voice over a
private network between facilities in a company. |
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Internet
Telephony offers equivalent degree of quality and improvement
for fax transmissions, voice-mail/messaging delivery and other
applications. |
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Internet
Telephony provides improved efficiency and quality of service to
customers while generating new revenues for call centers, help
desks, customer support and other information operator intensive
activities. |
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Internet
Telephony can be used with any existing PSTN leased and dial-up
lines, PBXs and other Customer Premises Equipment (CPE),
enterprise Wide Area Networks (WANs)/Local Area Networks (LANs)
and Internet connections. |
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Internet
Telephony can also be utilized without the need of computers,
modems, or Internet access for alternate telephone calling. |
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Internet
Telephony can be used transparently without needing to know that
the Internet, TCP/IP or packet switching are involved. |
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With the evolution of telecommunication, Internet Telephony has
already created the initial foundation for a new class of applications.
This technological innovation will be static; it will be an expanding
and ongoing technology that will offer more solutions to satisfy the
growing needs for the Internet and computer telecommunications industry.
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4 ports H.323 VoIP Gateway Ports Assignment (optional
bandwidth controlled 4 ports switch)
如有任何查詢 請聯絡
香港, 澳門地區
客戶服務 : Miss Tang, 鄧小姐 (852) 2312-0878 Ext.
113 , email :
sonia@tops.hk
客戶服務 : Miss Lee, 李小姐 (852) 2312-0878 Ext.
113 , email :
li@tops.hk |
|
PABX 整合方案 : Mr. Steven Ho
何先生 (852) 2312-0878 Ext. 146 , email : steven@tops.hk |
|
工程項目經理 : Mr. Sunny Li 李先生 (852) 2312-0878 Ext.
122, email : sunny@tops.hk
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中國珠三角地區
|
工程項目經理 : Mr. Mike Ma 馬先生 (86) 755 8218-6489, email: mike@tops.hk
|
| 客戶服務 : Miss Tina Huang 黃小姐
(86) 755 8218-6489 Ext. 3028, email: tina@tops.hk |
| 客戶服務 : Mr. Hu Xuan 胡先生
(86) 755 8218-6489 Ext. 3022, email: huxuan@tops.hk |
| 客戶服務 : Mr. Jackal Ngai 倪先生
(86) 755 8218-6489 Ext. 3026, email: jackal@tops.hk |
|
