TANDBERG 3G Gateway User Manual

3.2 Dial from UMTS

The 3G Gateway supports three different UMTS Dial In services:

-“DiD” Æ Direct Inward dialing from a 3G handset.

-“IVR” Æ Dialing terminals from a 3G handset via a selection menu.

-“Phonebook” Æ Selecting an entry from a gateway phone book.

Any of these services can be enabled or disabled, but at least one must be enabled for incoming call routing to take place.

In order to enable parallel incoming calls, a PRI number range must be defined.

For more details on UMTS Dial-In services, please see the section ‘5.10 Services’.

DID

Direct Inward Dialing (DID) will provide you with direct ISDN numbers for your IP endpoints i.e. it will do a direct mapping between your ISDN number and an H.323/SIP Alias or vice versa. In order to use DID you will need to have assigned multiple ISDN numbers to your ISDN PRI or BRI line, as each ISDN number will map to a single IP endpoint.

Example:

ƒYour ISDN number range is from 67124000 to 67124050 and DID is enabled.

ƒYou want your IP endpoints to have the numbers (H.323 Alias) in the range 94000 - 94050.

In the services Configuration, set (remove) Prefix/Nr to 67124, set Service Type to DiD and (add) Prefix/Nr to 9.

ƒTo call an IP endpoint with H.323 Alias 94020 from ISDN, dial the ISDN number 67124020.

ƒThe gateway starts to call the IP endpoint and the “connecting” picture and sound are activated.

ƒWhen the call is connected audio and video are transmitted through the gateway.

IVR

Interactive Video Response (IVR), also called extension dial-in, is an automated answering system that directs the call to the IP endpoint indicated by the caller. The caller uses telephone tones (DTMF) to enter the H.323/SIP Alias or extension.

IVR is useful if you have limited numbers on your ISDN PRI or BRI line.

Example:

ƒA videoconferencing system calls into the Extension Dial In number with IVR active.

ƒThe gateway activates the ‘Welcome’ picture and sound.

ƒThe videoconferencing system enters the extension (H.323 Alias) followed by the # (pound-sign) to indicate end of number.

ƒThe gateway starts to call the IP endpoint and the “Connecting” picture and sound are activated.

ƒWhen the call is connected audio and video are transmitted through the gateway.

20

Page 20
Image 20
TANDBERG Hub user manual Dial from Umts, Did