rixride

Go around the PBX> From what I read the max speed a PBX line lets through is 28.8..although personally I have been able to connect faster, I would go with a dedicted analog that does not go through the PBX.

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jack

Rix.

Sorry to disagree but I've got a Product Bulletin regarding this issue that states the Nortel should be able to pass at or about 50k on a anlouge port.

If interested, I can post the PD bulletin.

Jack

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anil

yes mr.jack I am intrested please send me thanks

[Edited on 24/11/2002 by anil]

rixride

Oh? Maybe they upgraded, I was looking at Release 24 books...I remember specifically reading that the Meridian couldn't pass through 288..and I was thinking what a croc! but I have always been able to connect faster so... :casstet:

Thanks for the update.

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jack

If anybody needs a pdf of the bulletin let me know.



Here's the important stuff from the bulletin --

ENTERPRISE SOLUTIONS
This document is provided to INNMUG members by Nortel (Northern Telecom) Customer Relations & Development for information purposes only. Nortel reserves the right to change this information without notice. Distributor part numbers and packaging for these same items may vary. For more information, please contact your Distributor or call 1-800-4-NORTEL.
Number: 99065
Date: July 1999

Introducing NT8D09BA Message Waiting Line Card
The NT8D09BA Analog Message Waiting Line Card is the result of ongoing product evolution designed to optimize technological advances to ensure continued performance objectives for Meridian 1. The product is a 16 port IPE based circuit card that incorporates components and design philosophy utilized in the Nortel Networks DMS World Line Card series of Central Office line circuits. As such, it brings transmission enhancements and improved reliability with the incorporation of individual codecs for each analog port.

Initial deployment of the NT8D09BA will be for mu-law applications of Meridian 1 in North American markets and may be used as a direct replacement for the existing NT8D09AL version. It is compatible to all systems capable of supporting Intelligent Peripheral Equipment (IPE), including the installed base.

Introduction of NT8D09BA guards against future component obsolescence to ensure ongoing enhancements can be made as necessary to meet market demands.

Description

The NT8D09BA contains 16 identical and independently configured line interface units for connection to associated 500-type (rotary dial) or 2500-type (digitone) telephones. The card distributes -150 volt DC power from each port to provide message waiting indications on associated lamps of the connected telephones. Each unit provides a 600 ohm matching impedance and has an operating loop length of 1000 ohms, excluding the telephone set. The NT8D09BA may also be used to connect to other auxiliary
devices that require this type of interface to the Meridian 1. Table 1 denotes the electrical characteristics of the line interface units.

The card mounts in any slot location capable of supporting IPE, including floor-standing equipment modules and wall mount cabinets. This includes the Meridian 1 remote product portfolio of Fiber Remote IPE, Fiber Remote Multi-IPE, Carrier Remote, and Mini-Carrier Remote interfaces. The NT8D09BA is also backwards compatible to all installed IPE based systems operating on X11 Release 15 or later software.

Product Code

NT8D09BA A0766186 Analog Message Waiting Line Card Features and Benefits
The inclusion of advanced codec technology provides the capability for improved operating performance when used with externally connected modems for data communications. Related transmission speeds through the Meridian 1 are optimized subject to favorable conditions being available for the complete end-to-end connection. Such criteria includes:
· a single analog to digital conversion, provided by the codec of the associated port of the NT8D09BA line card, in the overall connection
· a digital trunk connection from the Meridian 1 to the Public Switched Telephone Network (PSTN), Private Network, or Service Provider
· digital transmission facilities from the Service Provider at the far end of the connection
· modems and PC drivers configured per manufacturer's instructions as appropriate to support the most optimal speeds
· suitable line conditions and loop length from the modem to the analog port of the NT8D09BA
Under such conditions, the NT8B09BA will support the V.90 standard for 56K modem applications given that:
· FCC regulations limit the power level needed for 56 Kbps connections to a level that supports a 53 Kbps transfer rate; actual speeds will vary depending upon loop length, telephone line conditions, modem quality and compatibility, external network equipment and routing.
· V.90 technology is asymmetrical such that downstream data transmission may be at speeds up to 53 Kbps whereas upstream data transmission is at rates up to 33.6 Kbps.
· V.90 must be supported at both ends of the connection; a V.90 analog modem connected to a port on the Meridian 1 analog line card and a V.90 digital modem connected to digital trunk facilities at the server end.

Subject to the foregoing operational conditions, it is also conceivable that the existing NT8D09AL card will, on short loops, perform satisfactorily for high-speed data transfer. In comparison, NT8D09BA technology extends this capability for the total loop range to potentially offset degradation in modem performance.

Installation
The installation of the NT8D09BA is identical to the existing NT8D09AL Message Waiting Line Card. A typical cable arrangement is shown in Figure 1, which details associated connector pin assignments.
Associated backplane pinouts are denoted in Table 2.
Software Administration
The individual line interface units on the NT8D09BA are configured in the same manner as the NT8D09AL, using overlay program LD 10: Analog (500/2500) Telephone Administration. Refer to X11 Software Input/Output Guide (NTP Section 553-3001-4000) for service change instructions.
Documentation
The following NTP is updated to include the attributes of the NT8D09BA:

Jack

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gei_spot

Yeah' I remember 'back in the day' when you were only allowed speeds up to 28.8 but I believe now that you can obtain speeds up to 50+

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anil

thanks all