Perle Systems 4030370 Manuel D’Utilisation

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Configuring a USB Modem

SCS IOLAN models support a USB Wireless Modem that can be installed to permit access to the 
IOLAN via the internet or other WAN network. If you are using a PCMCIA Wireless Card, See 

. When the PCI card type has been configured to be 

, the serial port associated with the USB Modem is automatically set to 

. No other PPP 

configuration is typically required. The USB Modem will establish a GPRS data connection over the 
service provider’s GSM network. The service provider will assign an IP address to your wireless 
connection. This address may be public or private and it may be dynamically or statically assigned, 
depending on the type of account established with the service provider. If a static, public IP address 
has been assigned, the IOLAN will be directly accessible via that IP address. If a dynamic, public IP 
address has been assigned, you may access your IOLAN with the assistance of a dynamic DNS 
service provider. These service providers provide a method of accessing your device server using a 
standard URL (for example, yourcompany.dyndns.org), when the IP address assigned by the Wireless 
provider is dynamic. The IOLAN SCS supports dynamic DNS updates to DynDNS.com (see 

 for more information).

Configure the following parameters:

Specify the APN required by your internet provider to access their network. 

See the internet provider documentation for more information. 

Specify the name required by your internet provider to access their network. 

Specify the password required by your internet provider to access their 

network. 

Specify the phone number provided by your service provider to access their 
wireless network. 
Field Format: Probably similar to 

Initialization String Specify the initialization string required by your internet service provider for 

your wireless modem.