Robustel M1000 Pro V2 Guía de usuario descargar pdf (Pagina 39)

Robustel GoRugged M1000 Pro V2 User Guide

RT_M1000 Pro V2_UG_v01.00 23.11.2012 38 / 49

Confidential

Custom

Keep Alive

When using GPRS/UMTS with a session running most ISPs will monitor the traffic flow, if

there is none for a predetermined period of time then it will shut the connection down at

either the DHCP server or the APN, this is performed so that system resources are not taken

up unnecessarily.

To stop this happening you will need to send periodic Keep Alive bytes to keep the modem

always online.

Disable

Interval

Time interval between two Keep Alive packets, selecting from 5 to 1200 seconds.

seconds

REQ

Packet

Keep Alive Request Packet, written in Hex format, maximum 64 bytes.

Null

ACK

Packet

Keep Alive Acknowledge Packet, written in Hex format, maximum 32 bytes.

Keep Alive Acknowledge Packet is optional.

Null

Custom

Logout

Tick to enable.

Some TCP servers required Logout Request Packet with follow flow:

A TCP connection ends with the client sending a Logout Request Packet. If the logout request

is valid, the server responds with a Logout Acknowledge Packet and ends the connection.

Logout Acknowledge Packet is optional.

Disable

REQ

Packet

Logout Request Packet, written in Hex format, maximum 64 bytes.

Null

ACK

Packet

Logout Acknowledge Packet, written in Hex format, maximum 32 bytes.

Logout Acknowledge Packet is optional.

Null

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Robustel M1000 Pro V2 Guía de usuario Pagina 39