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 August 2007 

 

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Purpose 

This document is intended to provide users with the necessary tools to make successful ISDN calls on 

Tieline TLR300B Rack Codecs under a variety of ISDN line conditions  

 

Important 

Settings 
Firstly, it is important to know what Wizard and 

Menu settings are available to configure ISDN 

 

An  extract  of  the  ISDN  Wizard  flow  chart 

has been provided here 

 

The Menu settings are located at:  

Menu 

 Configuration 

 ISDN< Left 

Setup

 (or ISDN> Right Setup, depending 

on the slot the module has been inserted 

into) and contain the full set off options 
displayed in the adjacent illustration 

 

Factory Default Settings 

Are denoted on the codec and in the adjacent 
illustration by arrows either side of the setting I.e. 

P-Multi

 

 

To restore Factory Default Settings: 

Menu 

 Reset Functions 

 Set Sys Defaults 

 All Profiles 

 Yes

 

 

Wait 10 seconds 

 

Reboot the codec: 

Menu 

 Reset 

Functions 

 Reboot System 

 Yes

 

 
ISDN Line Types 

The ISDN Line Types: ‘P-Point’ (Point to Point) & 
‘P-Multi’ (Point to Multipoint) are designated by 

the network service provider and may vary 
between venues/locations 

 

Choosing the correct Line Type is 

discussed further below 

 

Another ISDN setting is ‘On Demand’. This 

may be designated ‘On’ or ‘Off’ by the 
network service provider and is also 

discussed further below 

 

Session Data 
When Tieline codecs establish communications the 
dialer sends its settings to the receiving codec 

over Session Data. The receiving codec inherits 
the following settings from the dialing codec: 

 

Profile 

 

Algorithm 

 

Sample Rate 

 

Bitrate 

This does not occur when dialing to non Tieline 
products so ‘Session Data’ must be turned off to 
provide compatibility. To disable ‘Session Data’ 

navigate to: 

 

Menu 

 Configuration 

 System Settings 

 Session Data 

 Disable

 

Note: Remember to re-enable ‘Session Data’ when next dialing to another Tieline codec

 

 

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