Address management for remote terminals in digital loop transmission systems
First Claim
1. In a digital loop transmission system including a local area network comprising a plurality of remote terminals, each having a preset unique multi-byte serial number, and at least one master circuit in one of said terminals, a method for assigning addresses to said terminals comprising the steps of:
- generating a search address by each of said terminals which search address has a lesser number of bytes than the serial number;
performing a binary search by the master circuit to determine the search address of each terminal wherein the master circuit sends a range of search addresses to remote terminals, each remote terminal with a search address within that range responds to the master circuit, and the master circuit divides the search range until it receives a single response from a remote terminal with a search address within the transmitted range; and
assigning to each remote terminal by the master circuit an active address which is different from the search address and also has a lesser number of bytes than the serial number.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a method and apparatus for identifying remote terminals which are networked in a digital loop transmission system. A Site Interface Unit (SIU) at one of the remote terminals acts as a master. The Bank Controller Unit (BCU) at each remote terminal calculates a 16-bit number based on its 60-byte serial number. A binary search is then performed by the SIU to determine the calculated number of each BCU, and an address is assigned to each remote terminal by the SIU. Any conflicts in the numbers initially calculated are resolved by transmission of the full 60-byte serial number.
-
Citations
16 Claims
-
1. In a digital loop transmission system including a local area network comprising a plurality of remote terminals, each having a preset unique multi-byte serial number, and at least one master circuit in one of said terminals, a method for assigning addresses to said terminals comprising the steps of:
-
generating a search address by each of said terminals which search address has a lesser number of bytes than the serial number; performing a binary search by the master circuit to determine the search address of each terminal wherein the master circuit sends a range of search addresses to remote terminals, each remote terminal with a search address within that range responds to the master circuit, and the master circuit divides the search range until it receives a single response from a remote terminal with a search address within the transmitted range; and assigning to each remote terminal by the master circuit an active address which is different from the search address and also has a lesser number of bytes than the serial number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. Apparatus for assigning addresses to remote terminals in a digital loop transmission system including a local area network, each terminal having a preset unique multi-byte serial number, the apparatus comprising:
-
means for generating a search address by the remote terminal which search address has a lesser number of bytes than the serial number; means for writing said search address at another location in said remote terminal; and means for receiving from a master circuit a range of search addresses having a lesser number of bytes than the serial number and for determining if the search address of the terminal is within said range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification