Service description
GTS Classic is a telephone service based on conventional technology and offered by GTS Hungary, available with analog, ISDN2 or ISDN30 connection. One, one or two and thirty voice channels are provided by the analog, ISDN2 and ISDN30 service respectively. The channels are totally independent and suitable for both call origination and the reception of incoming calls. In addition to voice communication GTS Classic service supports fax and data communication as well.
The main telephone exchange of GTS Hungary provides connection to domestic and international fixed line and mobile carriers alike, ensuring thereby undisturbed telephone service in all call directions. The communication between the set of subscribers and the main telephone exchange of GTS Hungary is implemented via the transmission system of GTS Hungary which is under permanent professional supervision on every day of the year, thus the excellent technical level of the service is guaranteed on an ongoing basis.
Phone numbers for GTSClassic service can freely be chosen from the own numbering fields of GTS Hungary (for example 06 1/815-XXXX in Budapest or 06 XX/815-XXX in the country). It is also possible to select easy-to-remember, individual phone numbers (so-called nice numbers). You can naturally subscribe to GTS Classic service with number porting; in this case the current phone numbers of your company remain unchanged.
The differences between analog, ISDN2 and ISDN30 GTS Classic services are shown in the table below.
| Analog | ISDN2 | ISDN30 | |
|---|---|---|---|
| Call zones (directions) | Domestic local, long distance, mobile and international | ||
| Phone numbers | 1 | 1, 2 or 10 | 100 or individual quantity |
| Ordering of further phone numbers | - | in packages of 10 or 100 | in packages of 100 |
| Type of fax communication | yes (G3) | yes (G4) | yes (G4) |
Supplementary services
| Analog | ISDN2 | ISDN30 | |
|---|---|---|---|
| Direct Dialing-In (DDI) | - | yes | yes |
| Calling Line Identification Presentation (CLIP) | yes | yes | yes |
| Calling Line Identification Restriction (CLIR) /permanently/ | yes | yes | yes |
| Calling Line Identification Restriction Request /on a call-by-call basis/ (CLIRREQ) | - | yes | yes |
| Calling Line Identification Restriction Suspension /on a call-by-call basis/ (CLIRSUSP) | - | yes | yes |
| Connected Line Identification Presentation (COLP) | yes | yes | yes |
| Connected Line Identification Restriction (COLR) /permanently/ | yes | yes | yes |
| Connected Line Identification Restriction Request /on a call-by-call basis/ (COLRREQ) | - | yes | yes |
| Connected Line Identification Restriction Suspension /on a call-by-call basis/ (COLRSUSP) | - | yes | yes |
| Call Forwarding Unconditional (CFU) | yes | yes | yes |
