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Although licenses may have been installed at the factory, all Telesis systems are not pre-configured at the factory for any specific application. To illustrate, a Telesis system may have been shipped with ISDN signaling licenses for E1 interfaces, however the factory default signaling for all E1 interfaces is CAS. With some simple programming, signaling type of an E1 can be selected as another in the field.

As mentioned before, the factory default signaling type for all E1 interfaces is E1 CAS single bit E&M emulation. In Homepage of the integrated web server, installed interfaces can be viewed.

If Homepage is accessed for a Telesis system with the factory default parameters, it shows all E1 interfaces as E1CasE&M_NNN. There, NNN indicates the total number of E1 voice channels available in the system.

Selecting another signaling or protocol type for an E1 interface (which is CAS signaling by default) is easy. First, it is necessary to access Common properties page of the relevant E1. There are several ways to access Common properties page.

As the first option, if you click on E1CasE&M_NNN, then Select user pages open. These pages show all available E1 channels (multiple pages, which can be accessed with up and down buttons).

Selecting a channel and pressing Common button opens the Common properties page of the selected channel.

In Common properties page, Change interface type is used for changing the interface type. Select the desired signaling or protocol from the pulldown menu and press Apply button next to the right. After the page refreshes, click on OK button.

Be aware that setting the signaling type is not the last step for programming an E1 interface. Depending on the signaling type, further programming might be required for a proper communication the TDM network connected. Furthermore, some of the signaling types may require E1 interfaces to be restarted.

If a signaling or protocol type of an E1 interface is modified from a CAS type to a CCS one, the access code of the E1 will also change or be simplified, such that:

  • For the E1 having channel access codes 50001 to 50031, the default access code of the E1 will be simplified to 50000
  • For the E1 having channel access codes 50101 to 50131, the default access code of the E1 will be simplified to 50100
  • For the E1 having channel access codes 50201 to 50231, the default access code of the E1 will be simplified to 50200
  • and so on.

In other words, voice channels in an E1 interface with a CCS signaling do not have individual access codes. Instead, the interface itself has an access code.

Do not forget: Whenever OK button is clicked in Common properties pages, the modified parameters are sent to the operational memories of the Telesis system. The operational memories are RAMs, so that, they can be lost if the Telesis system is powered down. In order to store these programmed parameters to the nonvolatile memories of the system, Save command in Homepage should be operated. There, click on OK button to store programmed parameters to the nonvolatile memories.

As another option for accessing Common properties page if you are aware about the channel access code, you may click on Users/find link in Homepage.

Then, Select to edit page opens.

Edit the access code into the box and click on Common button to access Common properties page of this access code.

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Page last modified on October 27, 2010, at 01:18 AM EST
Subject to change without any notice. All rights reserved 2010 - Telesis A.S.
Iskitler Cad. No.68 Ankara, TURKEY. Tel: +90 312 3840540 Fax: +90 312 3840549