ZyXEL MAX208M2W User Guide - Page 69
Frequency Ranges, Certification Authority, Certificate File Formats
View all ZyXEL MAX208M2W manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 69 highlights
Chapter 6 WiMAX Frequency Ranges The following figure shows the WiMAX Device searching a range of frequencies to find a connection to a base station. Figure 25 Frequency Ranges In this figure, A is the WiMAX frequency range. "WiMAX frequency range" refers to the entire range of frequencies the WiMAX Device is capable of using to transmit and receive (see the Product Specifications appendix for details). In the figure, B shows the operator frequency range. This is the range of frequencies within the WiMAX frequency range supported by your operator (service provider). The operator range is subdivided into bandwidth steps. In the figure, each C is a bandwidth step. The arrow D shows the WiMAX Device searching for a connection. Have the WiMAX Device search only certain frequencies by configuring the downlink frequencies. Your operator can give you information on the supported frequencies. The downlink frequencies are points of the frequency range your WiMAX Device searches for an available connection. Use the Site Survey screen to set these bands. You can set the downlink frequencies anywhere within the WiMAX frequency range. In this example, the downlink frequencies have been set to search all of the operator range for a connection. Certification Authority A Certification Authority (CA) issues certificates and guarantees the identity of each certificate owner. There are commercial certification authorities like CyberTrust or VeriSign and government certification authorities. You can use the WiMAX Device to generate certification requests that contain identifying information and public keys and then send the certification requests to a certification authority. Certificate File Formats The certification authority certificate that you want to import has to be in one of these file formats: • Binary X.509: This is an ITU-T recommendation that defines the formats for X.509 certificates. • PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses lowercase letters, uppercase letters and numerals to convert a binary X.509 certificate into a printable form. • Binary PKCS#7: This is a standard that defines the general syntax for data (including digital signatures) that may be encrypted. The WiMAX Device currently allows the importation of a PKS#7 file that contains a single certificate. WiMAX Device Configuration User's Guide 69