CN106790232B - Method and system for realizing VOIP voice service through LLDP message - Google Patents

Method and system for realizing VOIP voice service through LLDP message Download PDF

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CN106790232B
CN106790232B CN201710033684.9A CN201710033684A CN106790232B CN 106790232 B CN106790232 B CN 106790232B CN 201710033684 A CN201710033684 A CN 201710033684A CN 106790232 B CN106790232 B CN 106790232B
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voice
lldp
priority
dscp
voip
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CN106790232A (en
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王东平
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Shanghai Gongjin Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4535—Network directories; Name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/26—Special purpose or proprietary protocols or architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention relates to a method for realizing VOIP voice service through LLDP message, which comprises (1) local side equipment configuring voice VLAN, Priority and DSCP; (2) the terminal equipment receives the ME issued by the local side equipment, reads and converts the ME into an LLDP message and forwards the LLDP message to a VOIP voice telephone; (3) the VOIP voice telephone acquires voice VLAN, Priority and DSCP value through LLDP message, and initiates voice registration request to SIP server, after the registration is complete, the voice service is realized; (4) and finishing registration and realizing voice service. By adopting the method and the system, the ONU can convert the OMCI entity value into the LLDP and send the LLDP to the following voice telephone through sending the voice parameters under the LLDP message carrying the announcement negotiation TLV, thereby realizing the voice service of the voice telephone and having wide application range.

Description

Method and system for realizing VOIP voice service through LLDP message
Technical Field
The present invention relates to the field of communications technologies, and in particular, to the field of Voice Over Internet Protocol (VOIP) Voice communications technologies, and in particular, to a method and a system for implementing a VOIP Voice service through a Link Layer Discovery Protocol (LLDP) message.
Background
At present, the variety of network devices is increasingly diversified and their respective configurations are complicated, and a standard information exchange platform is required in order to enable devices of different manufacturers to discover and interact their respective systems and configuration information in a network.
LLDP is generated under such a background, and provides a standard Link Layer Discovery mode, which can organize Information such as main capability, Management address, device identifier, interface identifier, etc. of a local device into different TLVs (Type/Length/Value), encapsulate them in LLDPDU (Link Layer Discovery Protocol Data Unit) and distribute them to neighbors directly connected to itself, and store them in the form of standard MIB (Management Information Base) after receiving them, so as to allow a network Management system to query and determine the communication status of a Link. This also provides a new implementation way for supporting the VOIP voice telephone service.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method and a system for realizing VOIP voice service by sending a voice parameter under an LLDP message carrying an announcement negotiation TLV.
In order to achieve the above object, the present invention has the following configurations:
the method for realizing the VOIP voice service by transmitting the LLDP message comprises the following steps:
(1) the local side device configures a voice VLAN (virtual local area network), Priority and DSCP (Differentiated Service Code Point);
(2) the terminal equipment receives the local side equipment to send ME (Management Entity), reads and converts the ME into an LLDP message, and forwards the LLDP message to a VOIP voice telephone;
(3) the VOIP voice telephone acquires voice VLAN, Priority and DSCP value through LLDP message, and initiates voice registration request to SIP server, after the registration is complete, the voice service is realized;
(4) and finishing registration and realizing voice service.
Preferably, the step (1) is specifically:
(1-1) the local side device creates a private OMCI (terminal Management control Interface) ME;
and (1-2) configuring voice VLAN, Priority and DSCP data through the ME, and sending the ME to the terminal equipment through an OMCI channel.
Preferably, the step (2) is specifically:
(2-1) the terminal equipment converts the ME information into an LLDP MED-Network Policy TLV;
(2-2) the terminal device waits for the VOIP voice telephone to send an LLDP neighbor message;
(2-3) when the VOIP voice telephone sends the LLDP neighbor message, the terminal device issues the LLDP MED-Network Policy TLV to the VOIP voice telephone.
Preferably, the sending of the LLDP neighbor message by the VOIP voice phone specifically includes:
and the VOIP voice telephone sends an LLDP MED-Capabilities TLV and informs that the terminal equipment is a voice equipment and the self capability supports the LLDP MED-Network Policy TLV.
Preferably, the step (3) is specifically:
(3-1) when the VOIP voice telephone receives the LLDP MED-Network Policy TLV transmitted by the terminal equipment, reading the voice VLAN, Priority and DSCP;
and (3-2) the VOIP voice telephone sends the voice sip registration packet, the voice VLAN, the Priority and the DSCP fields to a registration server through the Ethernet port of the terminal equipment.
The system for realizing VOIP voice service by transmitting the LLDP message is also included, and the system comprises:
the local side equipment is used for configuring voice VLAN, Priority and DSCP, as well as voice SIP server address and server port, and authenticating a user name and a password;
the terminal equipment is used for receiving the ME entity issued by the local side equipment through the OMCI channel, reading and converting the ME entity into an LLDP message, and forwarding the LLDP message to the VOIP voice telephone;
and the VOIP voice telephone is used for acquiring the voice VLAN, Priority and DSCP value through LLDP, initiating a voice registration request to the SIP server, and realizing voice service after the registration is complete.
Preferably, the terminal device further includes:
the OMCI protocol stack module is used for reading the voice VLAN, Priority and DSCP contained in the local side equipment issuing entity and packaging the voice VLAN, Priority and DSCP in an LLDP MED-Network Policy TLV message;
and the LLDP module is used for reading the neighbor information table of the neighbor device and judging whether the neighbor device is a voice device, and if the neighbor device is the voice device, the LLDP module issues the voice VLAN, the Priority and the DSCP to the voice-supporting device.
By adopting the method and the system for realizing the VOIP voice service through the LLDP message, the voice telephone sends the LLDP message and informs the ONU that the voice telephone is a voice device and supports the MED-Capability, the ONU can actively read the OMCI entity value, and if the voice VLAN, Priority and DSCP fields configured by the OLT are found, the ONU can convert the OMCI entity value into the LLDP and send the LLDP to the following voice telephone, so that the voice telephone realizes the voice service.
Drawings
Fig. 1 is a schematic structural diagram of an advertisement negotiation TLV of the method for implementing VOIP voice service through LLDP packet according to the present invention.
Fig. 2 is a schematic diagram of an MED-Capabilities TLV structure of the method for implementing VOIP voice service through LLDP packet in the present invention.
Fig. 3 is a schematic diagram of an MED-Network Policy TLV structure of the method for implementing VOIP voice service through LLDP packet in the present invention.
Fig. 4 is a schematic diagram of the overall architecture of the system for implementing VOIP voice service through LLDP messages according to the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
The method for realizing the VOIP voice service by transmitting the LLDP message comprises the following steps:
(1) the local side equipment configures a voice VLAN, Priority and DSCP;
(2) the terminal equipment receives the ME issued by the local side equipment, reads and converts the ME into an LLDP message and forwards the LLDP message to a VOIP voice telephone;
(3) the VOIP voice telephone acquires voice VLAN, Priority and DSCP value through LLDP message, and initiates voice registration request to SIP server, after the registration is complete, the voice service is realized;
(4) and finishing registration and realizing voice service.
In a preferred embodiment, the step (1) is specifically:
(1-1) the local side equipment creates a private OMCI ME;
and (1-2) configuring voice VLAN, Priority and DSCP data through the ME, and sending the ME to the terminal equipment through an OMCI channel.
In a preferred embodiment, the step (2) is specifically:
(2-1) the terminal equipment converts the ME information into an LLDP MED-Network Policy TLV;
(2-2) the terminal device waits for the VOIP voice telephone to send an LLDP neighbor message;
(2-3) when the VOIP voice telephone sends the LLDP neighbor message, the terminal device issues the LLDP MED-Network Policy TLV to the VOIP voice telephone.
In a preferred embodiment, the sending the LLDP neighbor message by the VOIP voice phone is specifically as follows:
and the VOIP voice telephone sends an LLDP MED-Capabilities TLV and informs that the terminal equipment is a voice equipment and the self capability supports the LLDP MED-Network Policy TLV.
In a preferred embodiment, the step (3) is specifically:
(3-1) when the VOIP voice telephone receives the LLDP MED-Network Policy TLV transmitted by the terminal equipment, reading the voice VLAN, Priority and DSCP;
and (3-2) the VOIP voice telephone sends the voice sip registration packet, the voice VLAN, the Priority and the DSCP fields to a registration server through the Ethernet port of the terminal equipment.
The system for realizing VOIP voice service by transmitting the LLDP message is also included, and the system comprises:
the local side equipment is used for configuring voice VLAN, Priority and DSCP, as well as voice SIP server address and server port, and authenticating a user name and a password;
the terminal equipment is used for receiving the ME entity issued by the local side equipment through the OMCI channel, reading and converting the ME entity into an LLDP message, and forwarding the LLDP message to the VOIP voice telephone;
and the VOIP voice telephone is used for acquiring the voice VLAN, Priority and DSCP value through LLDP, initiating a voice registration request to the SIP server, and realizing voice service after the registration is complete.
In a preferred embodiment, the terminal device further includes:
the OMCI protocol stack module is used for reading the voice VLAN, Priority and DSCP contained in the local side equipment issuing entity and packaging the voice VLAN, Priority and DSCP in an LLDP MED-Network Policy TLV message;
and the LLDP module is used for reading the neighbor information table of the neighbor device and judging whether the neighbor device is a voice device, and if the neighbor device is the voice device, the LLDP module issues the voice VLAN, the Priority and the DSCP to the voice-supporting device.
In a specific embodiment, as shown in fig. 4, the present invention includes the following:
GPON local side equipment olt (optical Line terminal): the system comprises a voice VLAN, Priority and DSCP used for configuring Ethernet ports on ONU, a voice SIP server address and a server port, and a user name and a password of a user are authenticated;
terminal equipment onu (optical network unit): receiving an ME entity issued by an OLT through an OMCI channel, reading and converting an LLDP message and forwarding the LLDP message to neighbor equipment (namely a voice telephone);
OMCI protocol stack: the ONU reads the voice VLAN, Priority and DSCP contained in the OLT issuing entity through an OMCI protocol stack and packages the voice VLAN, Priority and DSCP in an LLDP MED-Network Policy TLV message;
an LLDP module: and the ONU reads the neighbor information table of the following device through the LLDP to judge whether the device is a voice device, and if the device is the voice device, the ONU issues the voice VLAN, Priority and DSCP to the voice-supporting device through the LLDP.
And the VOIP voice telephone acquires the voice VLAN, Priority and DSCP value through LLDP, and the SIP server initiates a voice registration request to support voice service after the registration is complete.
In one particular embodiment:
first, the local side equipment OLT defines a private OMCI ME for sending down voice VLAN, Priority and DSCP, the OLT configures data and sends the ME to the ONU.
The terminal equipment ONU converts the sent ME information into LLDP MED-Network Policy TLV, and the ONU waits for the neighbor equipment to send LLDP neighbor information, if the neighbor equipment sends the LLDP MED-Capabilities TLV to inform the ONU that the ONU is a voice equipment and the capability of the ONU supports the Network Policy TLV, the ONU sends the LLDP MED-Network Policy TLV containing the voice VLAN, the Priority and the DSCP to the neighbor equipment.
When receiving LLDP MED-Network Policy TLV issued by ONU, the voice telephone can read the voice VLAN, Priority and DSCP in it, and sends the voice sip register packet plus the fields of voice VLAN, Priority and DSCP to the register server through the Ethernet port of ONU, thus completing registration and realizing voice service.
Wherein, the structure of the subtype of the advertisement negotiation TLV is shown in fig. 1, and the value of the subtype of the advertisement negotiation TLV is shown in table 1:
TABLE 1
Figure BDA0001212442790000051
The structure of the subtype of MED-Capabilities TLV is shown in FIG. 2, and the values of the subtype of MED-Capabilities TLV are shown in Table 2:
TABLE 2
Figure BDA0001212442790000052
Figure BDA0001212442790000061
The structure of the subtype of the MED-Network Policy TLV is shown in FIG. 3, and the values of the subtype of the MED-Network Policy TLV are shown in Table 3:
TABLE 3
Figure BDA0001212442790000062
Figure BDA0001212442790000071
By adopting the method and the system for realizing the VOIP voice service through the LLDP message, the voice telephone sends the LLDP message and informs the ONU that the voice telephone is a voice device and supports the MED-Capability, the ONU can actively read the OMCI entity value, and if the voice VLAN, Priority and DSCP fields configured by the OLT are found, the ONU can convert the OMCI entity value into the LLDP and send the LLDP to the following voice telephone, so that the voice telephone realizes the voice service.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims (4)

1. A method for realizing VOIP voice service by transmitting LLDP message is characterized in that the method comprises the following steps:
(1) the local side equipment configures a voice VLAN, Priority and DSCP;
(2) the terminal equipment receives the ME issued by the local side equipment, reads and converts the ME into an LLDP message and forwards the LLDP message to a VOIP voice telephone;
(3) the VOIP voice telephone acquires voice VLAN, Priority and DSCP value through LLDP message, and initiates voice registration request to SIP server, after the registration is complete, the voice service is realized;
(4) completing registration and realizing voice service;
the step (2) is specifically as follows:
(2-1) the terminal equipment converts the ME information into an LLDP MED-Network Policy TLV;
(2-2) the terminal device waits for the VOIP voice telephone to send an LLDP neighbor message;
(2-3) when the VOIP voice telephone sends the LLDP neighbor message, the terminal equipment issues the LLDP MED-Network Policy TLV to the VOIP voice telephone;
the step (3) is specifically as follows:
(3-1) when the VOIP voice telephone receives the LLDP MED-Network Policy TLV transmitted by the terminal equipment, reading the voice VLAN, Priority and DSCP;
and (3-2) the VOIP voice telephone sends the voice sip registration packet, the voice VLAN, the Priority and the DSCP fields to a registration server through the Ethernet port of the terminal equipment.
2. The method for implementing VOIP voice service through LLDP message delivery according to claim 1, wherein the step (1) specifically is:
(1-1) the local side equipment creates a private OMCI ME;
and (1-2) configuring voice VLAN, Priority and DSCP data through the ME, and sending the ME to the terminal equipment through an OMCI channel.
3. The method for implementing VOIP voice service through LLDP message delivery according to claim 1, wherein the step (3) specifically is:
(3-1) when the VOIP voice telephone receives the LLDP MED-Network Policy TLV transmitted by the terminal equipment, reading the voice VLAN, Priority and DSCP;
and (3-2) the VOIP voice telephone sends the voice sip registration packet, the voice VLAN, the Priority and the DSCP fields to a registration server through the Ethernet port of the terminal equipment.
4. A system for realizing VOIP voice service by transmitting LLDP message is characterized in that the system comprises:
the local side equipment is used for configuring voice VLAN, Priority and DSCP, as well as voice SIP server address and server port, and authenticating a user name and a password;
the terminal equipment is used for receiving the ME entity issued by the local side equipment through the OMCI channel, reading and converting the ME entity into an LLDP message, and forwarding the LLDP message to the VOIP voice telephone;
the VOIP voice telephone is used for acquiring the voice VLAN, Priority and DSCP value through LLDP, initiating a voice registration request to the SIP server, and realizing voice service after the registration is complete;
the terminal device further comprises:
the OMCI protocol stack module is used for reading the voice VLAN, Priority and DSCP contained in the local side equipment issuing entity and packaging the voice VLAN, Priority and DSCP in an LLDP MED-Network Policy TLV message;
and the LLDP module is used for reading the neighbor information table of the neighbor device and judging whether the neighbor device is a voice device, and if the neighbor device is the voice device, the LLDP module issues the voice VLAN, the Priority and the DSCP to the voice-supporting device.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103368967A (en) * 2013-07-17 2013-10-23 杭州华三通信技术有限公司 Security access method and equipment for IP phone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050195756A1 (en) * 2004-02-26 2005-09-08 Frattura David E. Status announcement system and method
EP2012491A1 (en) * 2007-07-02 2009-01-07 Alcatel Lucent Method of distributing geo-localisation information
CN100539532C (en) * 2007-07-10 2009-09-09 烽火通信科技股份有限公司 Realize the method and apparatus of voice intercommunication in the Gigabit Ethernet EPON
CN101132452A (en) * 2007-07-20 2008-02-27 华为技术有限公司 Method and system for adjusting port parameters of voice local side
CN103095508B (en) * 2013-02-25 2016-05-11 杭州华三通信技术有限公司 Operational Visit method and edge device
CN103236941B (en) * 2013-04-03 2015-09-30 华为技术有限公司 A kind of link discovery method and device
CN103179014B (en) * 2013-04-10 2016-03-09 杭州华三通信技术有限公司 The processing method of LLDP message and device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103368967A (en) * 2013-07-17 2013-10-23 杭州华三通信技术有限公司 Security access method and equipment for IP phone

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A Link Layer Solution to Location Identification of Emergency VoIP Callers;Saeideh Ashtarifar;《International Journal of Computer Networks & Communications (IJCNC)》;20100930;第2卷(第5期);全文 *
基于LLDP-MED的VOIP研究与实现;原浩;《科技传播》;20140623;第216-217页 *

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