COMSPHERE 3800Plus Modems

Call Request Commands

Call Request commands are issued from the DTE to the modem and are responsible for initiating any dial calls. Call Request commands include Call Request with Number Provided (CRN) and Call Request with Stored Memory Address Provided (CRS).

Call Request with Number Provided (CRN)

The CRN command dials the telephone number entered from the DTE. CRN is similar to the ATD command.

The CRN command format is:

CRNn

Where: n is the dial string. The following characters are permitted:

T

DTMF Dialing

P

Pulse Dialing

0±9

DTMF Tones or

 

Pulse Dialed Digits

* # A B C D

DTMF Tones

R

Reverse Dial

:

Wait for Dial Tone

, or <

User-Defined Pause

&

Flash Hook

= or >

Delimiters

Call Request with Stored Memory Address Provided (CRS)

The CRS command dials the telephone number stored in the request directory location. CRS is similar to the ATDS command.

The CRS command format is:

CRSx

Where: x is directory location 1±10.

The modem responds to the command with either a VAL (valid) or INV (invalid) response followed by a call progress report such as connect (CNX) or failure (CFI).

Call Response

Call Failure Indication (CFI)

The CFI response is issued to the DTE if the modem fails a CRN or CRS command. CFI is similar to the AT result codes BUSY, NO ANSWER, NO CARRIER, NO DIALTONE, and ERROR.

The CFI response format is:

CFIxx

 

Where:

xx is one of

ET Engaged tone

NS Number not stored

CB Local DCE busy

RT Timeout on ring tone

AB Abort call on time-out

NT Answer tone not detected

FC Forbidden call

ET is similar to the Call Failure Messages, Busy Signal and Trunk Busy and the result code BUSY.

NS is similar to the Common Operational Message Invalid Number and the result code ERROR.

CB is similar to the Call Failure Messages, Dial Line in Use and No Dial-Test and the result code ERROR.

RT is similar to the Call Failure Message No Answer Tone and the result code NO CARRIER.

AB is similar to the Call Failure Messages, No Dial Tone and No Dial-DTR and the result code NO DIALTONE and ERROR.

NT is similar to the Call Failure Message No Quiet Answer and the result code NO ANSWER.

Call Connecting (CNX)

The CNX response informs the DTE that the modem has connected to the remote modem. CNX is similar to the AT result code CONNECT.

The CNX response format is CNX.

F-2

November 1996

3980-A2-GB30-20

Page 168 Page 170
Page 169
Image 169
Paradyne 3800PLUS manual Call Request Commands, Call Response
Page 168 Page 170

3800PLUS specifications

The Paradyne 3800PLUS is a sophisticated networking device designed for various applications in high-demand environments, such as telecommunications and enterprise networks. This versatile solution is well-regarded for its robust performance, providing reliable and efficient connectivity for businesses and service providers.

One of the standout features of the Paradyne 3800PLUS is its ability to deliver high-speed data transmission. Supporting multiple protocols, it ensures seamless connectivity for data, voice, and video over the same infrastructure, reducing the need for multiple devices and simplifying network management. The device is capable of supporting both synchronous and asynchronous data formats, making it suitable for diverse networking needs.

With its advanced multiple service options, the Paradyne 3800PLUS supports various connection types, including T1, E1, and DSL, allowing it to adapt to different local area network (LAN) settings. This flexibility makes it a preferred choice for organizations that require support for both legacy systems and modern technologies. Furthermore, the device offers built-in support for various network management protocols, such as SNMP, simplifying monitoring and configuration.

Security is a significant concern in today's networking landscape, and the Paradyne 3800PLUS addresses this with integrated security features that help ensure data integrity and privacy. The device supports encryption and authentication techniques, which protect against unauthorized access and safeguard sensitive information transmitted over the network.

The Paradyne 3800PLUS is also designed with ease of use in mind. Its web-based interface simplifies configuration and management, making it accessible for network administrators regardless of their technical expertise. Additionally, the device is equipped with diagnostic tools and indicators that facilitate troubleshooting, enabling quicker resolution of connectivity issues.

In terms of scalability, the Paradyne 3800PLUS can accommodate the growing needs of businesses and service providers. Its modular design allows for easy upgrades and the addition of new features, ensuring that the network infrastructure can evolve with changing demands.

In summary, the Paradyne 3800PLUS stands out as an advanced networking solution known for its high-speed capabilities, support for various protocols, integrated security measures, user-friendly management interface, and scalability. These characteristics make it an ideal choice for organizations seeking a reliable and efficient networking solution to enhance their operations and support future growth.
Top Page Image Contents