Comparing ISDN30 and ISDN30e
There are a number of BT Digital Calling Features (formerly known as Digital Select Services). These include Call Forwarding, Call Barring and Calling Line Identity (CLI). ISDN30 uses the BT signalling system DASS2, while ISDN30e uses the Q931 signalling system which conforms to the worldwide ITU-T standard. The range of Digital Calling Features available on these systems is slightly different, as shown in the table below. Most BT Digital Calling Features are controlled by your equipment. They do not use pre-set codes such as 1471. Administration provided Selective Outgoing Call Barring on: *For customer-controlled service features, your switch/PBX must be able to activate the service. Consult your supplier for more information.ISDN30 ISDN30e Calling Line Identity Presentation (CLIP) Yes Yes Presentation Number Yes Yes Calling Line Identity Restriction (CLIR) Yes Yes Connected line Identity Presentation (COLP) No Yes Connected Line Identity Restriction (COLR) Yes Yes Administration provided Basic Diversion – voice only Yes No Administration provided Diversion on Busy or failure of BT bearer – voice only Yes No Administration provided set up Call Forwarding for all calls – voice only No Yes Administration set up Call Forwarding on Busy – voice and data No Yes Administration set up Call Forwarding on No Reply – voice and data No Yes Administration provided permanent Outoing Call Barring (OCB) Yes Yes Customer controlled Services* Diversions – not available across DDI (Basic, Busy/failure, Ringtone No Reply) Yes No Channel Busying Yes No Call Barring Yes No Customer controlled Call Forwarding No Yes Yes Yes Call Charge Indication Yes No Sub Addresses Yes
(6 octet)Yes
(20 octet)Call Deflection No Yes DDI Yes Yes
- Print this answer
-
Email sent
An email has been sent to with a link to this article.
Email this answer
'Fixed' Ip address keeps changing?