PHYSICAL INTERFACE. Novatel Wireless NBZNRM-3800, Expedite, Merlin

Add to my manuals
106 Pages

advertisement

PHYSICAL INTERFACE. Novatel Wireless NBZNRM-3800, Expedite, Merlin | Manualzz

N O V A T E L W I R E L E S S T E C H N O L O G I E S L T D .

7

PHYSICAL INTERFACE

Protocol

CDPD System Specification Part 400 Version 1.1 (CDPD Forum Inc.) This is the protocol stack for the Expedite Wireless IP Modem:

To Host

SLIP

Communication Driver

PPP

UDP

AT Interface

TCP

IP

SNDCP

MDLP

MAC

Physical

Host

OEM

Application

Layers

CDPD

Layers

The Expedite Wireless IP Modem does not support V.42 compression in SNDCP.

The TCP/UDP interface is capable of supporting up to 3 sessions simultaneously

1

.

The AT-command set described herein is derived from “CDPD Implementor Guidelines”, Release 1.1

2

. It contains a subset of the commands described in Part 2014 that are supported by the Novatel Expedite

Wireless IP Modem.

For the purposes of this specification, “NRM” refers to the Novatel Expedite Wireless IP Modem; “Host” refers to the OEM application controller.

1

This is provided to solve the problem presented by delays encountered when closing a TCP session. That is, in order to process

Host transactions in rapid succession (and since it is required to establish a new TCP session for each transaction) it is necessary to establish a new TCP session before the previous one has had a chance to close.

2

CDPD Forum makes no representations about the suitability of any material, comprising the CDPD system specification (or any derivative work incorporating any element thereof) for any purpose; it being provided “as is” and without any warranties whatsoever, express or implied. The CDPD Forum shall not be responsible for any damages of any kind related to the use of the CDPD system specification (or any derivative work incorporating any element thereof), including without limitation, actual, direct, indirect, incidental, consequential, special, or general damages.

A T C o m m a n d S p e c i f i c a t i o n - E x p e d i t e a n d M e r l i n

W i r e l e s s I P M o d e m s

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

Download PDF

advertisement

Table of contents