ISDN Lines (Integrated Services Digital Network) are high speed digital lines that connect to your digital PBAX. DDI numbers are attached to these digital lines to provide individual phone numbers for your employees.
Key reasons to have ISDN
- You need to connect a digital phone system
- Reduce the cost of multiple individual line rentals
- Scalability – ISDN can scale up to 30 lines, which can connect up to 90 phones
| ISDN |
Number of Lines |
Phones* |
Monthly |
| ISDN Basic |
2 |
3 - 5* |
$89.95 |
| ISDN |
Number of Lines |
Phones* |
Per Line Monthly
12 Month Contract |
Per Line Monthly
24 Month Contract |
| ISDN Primary Rate |
10-15 |
10-30* |
$50.00 |
$48.00 |
| ISDN Primary Rate |
15-29 |
15 - 85* |
$40.00 |
$38.00 |
| ISDN Primary Rate |
30 |
30 - 90* |
$32.00 |
$30.00 |
| ISDN Line Features |
Per Line Monthly |
| ISDN DDI Block 10 |
$30.00 |
| ISDN DDI Block 100 |
$60.00 |
| Caller ID* |
$0.01 per display |
* Every business has different line capacity needs, the above number of phones is only a guide, please consult your phone system provider on your ISDN Basic Rate requirements.
*Caller ID minimum usage fee is $6.18 (618 displays).