COMSPHERE 3800 Series Modems

Table 9-4

(2 of 3)

Dial Line Configuration Options

V32bis Autorate: Enable

Nxt Enable Disable StartAt48 StartAt96

Enable – Once connected, the modem automatically lowers the line rate if line conditions become impaired. When line conditions improve, the modem automatically shifts up to the highest data rate the line can support. This autorating only occurs between 14,400 bps and 4800 bps during V.32/V.32bis connections.

Disable – Line rate does not vary.

StartAt48, StartAt96 – Useful for lines with known noise problems, these settings cause the modem to connect at 4,800 bps (StartAt48) or 9,600 bps (StartAt96). If line conditions warrant it, the modem shifts up to the next higher rate until 14,400 bps or the highest possible rate for the line is reached.

The factory default is Enable.

AT command for V.32bis Autorate is S-register S76 = n, where n is 0 for Enable, 1 for Disable, 2 for StartAt48, and 3 for StartAt96.

Dial TX Level: Permissv(– 9)

 

 

 

 

 

 

 

Nxt Permissv(– 9)

–10 dBm

–11 dBm

–12 dBm

–13 dBm

–14 dBm

–15 dBm

–16 dBm

–17 dBm

–18 dBm

–19 dBm

–20 dBm

–21 dBm

–22 dBm

–23 dBm

–24 dBm

–25 dBm

–26 dBm

–27 dBm

–28 dBm

–29 dBm

–30 dBm

–31 dBm

–32 dBm

ETC 1.0_Cell ETC 1.1_Cell

 

 

 

 

 

 

 

 

 

 

 

 

Dial Transmit Level. Sets the power output level of the transmit signal over dial lines.

Permissive (– 9 dBm) – The modem transmits data at approximately –9 dBm.

ETC 1.0_Cell – Valid only if Enhanced Throughput Cellular (ETC) is installed. Transmit level is automatically adjusted in response to line conditions according to the proprietary ETC 1.0 specification. Use only with remote modems set to ETC 1.0_Cell, and limit the data rate to 4800 bps.

ETC 1.1_Cell – Valid only if ETC is installed. Transmit level is automatically adjusted in response to line conditions according to the proprietary ETC 1.1 specification.

The factory default is Permissv(–9).

AT command for Permissive mode is &J0.

AT commands for –10 through –32 dBm are &I10 through &I32.

AT command for ETC 1.0_Cell is &I99.

AT command for ETC 1.1_Cell is &I100.

V22b Guard Tone: Disable

Nxt Disable 550Hz 1800Hz

V.22bis Guard Tone. Determines whether the V.22bis guard tone is disabled, set to 550 Hz, or set to 1800 Hz.

Disable – No guard tone.

550 Hz or 1800 Hz – When the modem is in Answer mode, it transmits the guard tone at this frequency.

The factory default is Disable.

AT command to disable is &G0. AT command for 550 Hz is &G1.

AT command for 1800 Hz is &G2.

9-26

September 1998

3810-A2-GB30-30

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Paradyne 3800 manual V22b Guard Tone Disable Nxt Disable 550Hz 1800Hz

3800 specifications

The Paradyne 3800 is a versatile broadband access platform that has gained recognition for its impressive features and robust performance in delivering high-speed data communications. Designed to meet the demands of both residential and commercial environments, the Paradyne 3800 stands out with its innovative technologies and reliable characteristics.

One of the main features of the Paradyne 3800 is its capability to support multiple protocols, including Ethernet, IP, and ATM. This multi-protocol flexibility allows service providers to offer a range of services, from high-speed Internet access to voice over IP (VoIP) and video conferencing. This adaptability makes it an ideal solution for diverse customer requirements, enhancing service delivery and customer satisfaction.

The Paradyne 3800 utilizes advanced DSL technologies, most notably ADSL and ADSL2+, to provide high-speed internet services over existing copper telephone lines. With a maximum downstream rate of up to 24 Mbps, the 3800 ensures fast data transfers, making it suitable for bandwidth-intensive applications such as streaming and online gaming. Additionally, the device supports bonding capabilities, allowing multiple DSL lines to work together, effectively increasing bandwidth and enhancing overall performance.

Built with scalability in mind, the Paradyne 3800 allows for easy upgrades and expansions. Service providers can seamlessly add more capacity or features as demand grows without significant overhauls to the existing infrastructure. This scalability is complemented by an intuitive management interface, which simplifies network configuration, monitoring, and troubleshooting.

Security is another key characteristic of the Paradyne 3800. It employs various encryption methods and security protocols to safeguard user data and ensure secure communications. This focus on security is increasingly important in today’s cyber landscape, where protecting sensitive information is paramount.

In summary, the Paradyne 3800 is a sophisticated broadband access platform that combines cutting-edge technologies, multiple protocol support, and robust security features. Its scalability, high performance, and ease of management make it an attractive option for service providers looking to enhance their offerings and deliver reliable connectivity to their customers. Whether it’s for high-speed internet, voice, or video services, the Paradyne 3800 is positioned as a dependable solution in the evolving telecommunications landscape.