System and method for performing IP telephony

A method for performing IP telephony with an IP telephone, comprising:

• activating the TIP telephone;
• performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone, wherein the range of port numbers comprises one or more port numbers which are not reserved for use by other IP protocols;
• initializing the IP telephone;
• registering the IP telephone, wherein said registering the IP telephone comprises:
• the IP telephone sending a public IP address of the IP telephone;
• receiving and storing the public liP address of the IP telephone;
• the IP telephone sending a private IP address of the IP telephone;
• and
• receiving and storing the private IP address of the IP telephone;
• wherein said public IP address and said port range are useable to determine said private IP address;
• and
• performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports.

A method for performing IP telephony with an IP telephone, comprising:

• activating the IP telephone;
• performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone, wherein the range of port numbers comprises one or more port numbers which are not reserved for use by other IP protocols;
• initializing the TIP telephone;
• registering the IP telephone;
• and
• performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports, and wherein said performing IP communications using the IP telephone comprises:
• receiving a data packet from the IP telephone, wherein the data packet comprises a private source IP address, a source port number, and destination information associated with an IP device, and wherein said source port number is in the assigned range of port numbers;
• performing a network address persistent port translation (NAPPT) on the data packet;
• and
• sending the data packet to the IP device.

A method for performing IP telephony with an IP telephone, comprising:

• activating the IP telephone;
• performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone, wherein the range of port numbers comprises one or more port numbers which are not reserved for use by other IP protocols;
• initializing the IP telephone;
• registering the IP telephone;
• and
• performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and wherein said performing IP communications using the IP telephone comprises:
• receiving a data packet from the IP device, wherein the data packet comprises a public destination IP address, a destination port number, and source information, wherein said destination port number is in the assigned range of port numbers and wherein the public destination IP address and the destination port number may be used to uniquely identify the IP telephone;
• performing a network address persistent port translation (NAPPT) on the data packet;
• and
• sending the data packet to the IP telephone.

A system for performing IP telephony, comprising:

• a network;
• an IP telephone;
• a Service Gateway, operable to couple to the IP telephone through the network;
• and
• a Media Gateway Controller, operable to couple to the Service Gateway and the IP telephone through the network;
• wherein the IP telephone and the Service Gateway are operable to negotiate a DHCP lease, wherein said DHCP lease negotiation comprises the Service Gateway assigning a range of port numbers to the IP telephone based on an identifier of the IP telephone, and wherein, in said IP telephone and the Service Gateway being operable to negotiate the DHCP lease:
• the IP telephone is operable to issue a DHCP discover message to the Service Gateway, wherein said DHCP discover message comprises the identifier;
• the Service Gateway is operable to issue a DHCP offer to the IP telephone if the identifier is determined to be valid, wherein the DHCP offer comprises DHCP lease information based on the validated identifier;
• the IP telephone is operable to issue a DHCP request in response to the issued DHCP offer;
• the Service Gateway is operable to store the DHCP lease information in response to the issued DHCP request;
• and
• the IP telephone is operable to store the DHCP lease information and enable DHCP settings comprised in the DHCP lease information;
• wherein the IP telephone and the Service Gateway are operable to initialize the IP telephone;
• wherein the Media Gateway Controller is operable to register the IP telephone;
• wherein the IP telephone is operable to perform IP communications using one or more ports in the range of assigned ports;
• and
• wherein the Service Gateway is further operable to perform NAPPT on data packets sent to and from the IP telephone in said IP communications.

A system for performing IP telephony, comprising:

• a network;
• an IP telephone;
• a Service Gateway, operable to couple to the IP telephone through the network;
• and
• a Media Gateway Controller, operable to couple to the Service Gateway and the IP telephone through the network;
• wherein the IP telephone and the Service Gateway are operable to negotiate a DHCP lease, wherein said DHCP lease negotiation comprises the Service Gateway assigning a range of port numbers to the IP telephone based on an identifier of the IP telephone;
• wherein the IP telephone and the Service Gateway are operable to initialize the IP telephone;
• wherein the Media Gateway Controller is operable to register the IP telephone, and wherein, in registering the IP telephone, the Media Gateway Controller is operable to:
• receive a public IP address of the IP telephone from the IP telephone;
• and
• store the public IP address of the IP telephone;
• receive a private IP address of the P telephone from the IP telephone;
• and
• store the private IP address of the IP telephone;
• wherein said public P address and said port range are useable to determine said private IP address;
• wherein the IP telephone is operable to perform IP communications using one or more ports in the range of assigned ports;
• and
• wherein the Service Gateway is further operable to perform NAPPT on data packets sent to and from the IP telephone in said IP communications.

A system for performing IP telephony, comprising:

• a network;
• an IP telephone;
• a Service Gateway, operable to couple to the IP telephone through the network;
• and
• a Media Gateway Controller, operable to couple to the Service Gateway and the IP telephone through the network;
• wherein the IP telephone and the Service Gateway are operable to negotiate a DHCP lease, wherein said DHCP lease negotiation comprises the Service Gateway assigning a range of port numbers to the IP telephone based on an identifier of the IP telephone;
• wherein the IP telephone and the Service Gateway are operable to initialize the IP telephone;
• wherein the Media Gateway Controller is operable to register the IP telephone;
• wherein the IP telephone is operable to perform IP communications using one or more ports in the range of assigned ports;
• and
• wherein the Service Gateway is further operable to perform NAPPT on data packets sent to and from the IP telephone in said IP communications, and wherein, in performing NAPPT on data packets sent to and from the IP telephone the Service Gateway is operable to:
• receive a data packet from the IP telephone, wherein the data packet comprises a private source IP address, a source port number, and destination information associated with an IP device, and wherein said source port number is in the assigned range of port numbers;
• perform a network address persistent port translation (NAPPT) on the data packet;
• and
• send the data packet to the IP device.

A system for performing IP telephony, comprising:

• a network;
• an IP telephone;
• a Service Gateway, operable to couple to the IP telephone through the network;
• and
• a Media Gateway Controller, operable to couple to the Service Gateway and the IP telephone through the network;
• wherein the IP telephone and the Service Gateway are operable to negotiate a DHCP lease, wherein said DHCP lease negotiation comprises the Service Gateway assigning a range of port numbers to the IP telephone based on an identifier of the IP telephone;
• wherein the IP telephone and the Service Gateway are operable to initialize the IP telephone;
• wherein the Media Gateway Controller is operable to register the IP telephone;
• wherein the IP telephone is operable to perform IP communications using one or more ports in the range of assigned ports;
• and
• wherein the Service Gateway is further operable to perform NAPPT on data packets sent to and from the IP telephone in said IP communications;
• wherein, in performing NAPPT on data packets sent to and from the IP telephone the Service Gateway is operable to:
• receive a data packet from the IP device, wherein the data packet comprises a public destination IP address, a destination port number, and source information, wherein said destination port number is in the assigned range of port numbers and wherein the public destination IP address and the destination port number may be used to uniquely identify the IP telephone;
• perform a network address persistent port translation (NAPPT) on the data packet;
• and
• send the data packet to the IP telephone.

One or more memory mediums, wherein the one or more memory mediums store program instructions which are executable to perform:

• a) performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the TIP telephone is used to determine a range of port numbers assigned to the IP telephone, wherein said identifier is comprised in a DHCP discover message issued by the IP telephone, and wherein said performing client DHCP lease negotiation comprises:
• e) issuing a DHCP offer to the IP telephone if the identifier is determined to be valid, wherein the DHCP offer comprises DHCP lease information based on the validated identifier;
• f) the IP telephone issuing a DHCP request in response to the issued DHCP offer;
• g) storing the DHCP lease information in response to the issued DHCP request;
• h) the IP telephone storing the DHCP lease information;
• and
• i) the P telephone enabling DHCP settings comprised in the DHCP lease information;
• b) initializing the IP telephone;
• c) registering the IP telephone;
• and
• d) performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports.

One or more memory mediums, wherein the one or more memory mediums store program instructions which are executable to perform:

• a) performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• b) initializing the IP telephone;
• c) registering the IP telephone;
• and
• d) performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports;
• wherein said registering the IP telephone further comprises:
• e) the IP telephone sending a public IP address of the IP telephone;
• f) receiving and storing the public IP address of the IP telephone;
• g) the IP telephone sending a private IP address of the IP telephone;
• and
• h) receiving and storing the private IP address of the IP telephone;
• wherein said public IP address and said port range are useable to determine said private IP address.

One or more memory mediums, wherein the one or more memory mediums store program instructions which are executable to perform:

• a) performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• b) initializing the IP telephone;
• c) registering the IP telephone;
• and
• d) performing IP communications using the IP telephone;
• wherein said performing IP communications uses one or more ports in the range of assigned ports, and wherein said performing IP communications using the IP telephone comprises:
• e) receiving a data packet from the IP telephone, wherein the data packet comprises a private source IP address, a source port number, and destination information associated with an IP device, and wherein said source port number is in the assigned range of port numbers;
• f) performing a network address persistent port translation (NAPPT) on the data packet;
• and
• g) sending the data packet to the IP device.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions are executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein, in performing said client DHCP lease negotiation:
• the IP telephone program instructions are executable to issue a DHCP discover message, wherein the identifier is comprised in the DHCP discover message;
• the Service Gateway program instructions are executable to issue a DHCP offer to the IP telephone if the identifier is determined to be valid, wherein the DHCP offer comprises DHCP lease information based on the validated identifier;
• the IP telephone program instructions are executable to:
• issue a DHCP request in response to the issued DHCP offer;
• store the DHCP lease information and enable DHCP settings comprised in the DHCP lease information;
• and
• the Service Gateway program instructions are executable to store the DHCP lease information in response to the issued DHCP request.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions are executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein, in said registering the IP telephone:
• the IP telephone program instructions are executable to send a public IP address of the IP telephone;
• and
• the Media Gateway Controller program instructions are executable to receive and store the public IP address of the IP telephone.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions arc executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein, in said registering the IP telephone:
• the IP telephone program instructions are further executable to send a private IP address of the IP telephone;
• and
• Media Gateway Controller program instructions are further executable to receive and store the private IP address of the IP telephone;
• wherein said public IP address and said port range are useable to determine said private IP address.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions are executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein the range of port numbers comprises one or more port numbers which are not reserved for use by other IP protocols.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions are executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein, in said performing IP communications using the IP telephone, the Service Gateway program instructions are executable to perform:
• receiving a data packet from the IP telephone, wherein the data packet comprises a private source IP address, a source port number, and destination information associated with an IP device, and wherein said source port number is in the assigned range of port numbers;
• performing a network address persistent port translation (NAPPT) on the data packet;
• and
• sending the data packet to the IP device.

A plurality of memory mediums, comprising:

• an IP telephone memory medium storing IP telephone program instructions;
• a Service Gateway memory medium storing Service Gateway program instructions;
• and
• a Media Gateway Controller memory medium storing Media Gateway Controller program instructions;
• wherein the IP telephone program instructions and the Service Gateway program instructions are executable to perform:
• performing client DHCP lease negotiation for the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone;
• and
• initializing the IP telephone;
• wherein the IP telephone program instructions and the Media Gateway Controller program instructions are executable to register the IP telephone;
• wherein the IP telephone program instructions, the Service Gateway program instructions, and the Media Gateway Controller program instructions are executable to perform IP communications using the IP telephone, and wherein said performing IP communications uses one or more ports in the range of assigned ports;
• and
• wherein, in said performing IP communications using the IP telephone, the Service Gateway program instructions are further executable to perform:
• receiving a data packet from the IP device, wherein the data packet comprises a public destination IP address, a destination port number, and source information, wherein said destination port number is in the assigned range of port numbers and wherein the public destination IP address and the destination port number may be used to uniquely identify the IP telephone;
• performing a network address persistent port translation (NAPPT) on the data packet;
• and
• sending the data packet to the IP telephone.