### About the DataFire PTE Family

#### Introduction

The DataFire PTE family of adapters provides both ISDN and analog support for up to 60 channels per adapter. These adapters are offered as T1 and E1 versions, with one- or two-port models of each version. Each port can be configured for either modem or ISDN communications. The DataFire RAS PTE Series adapters provide these capabilities in the PCI form factor. The DataFire DSP PTE Series adapters provide these capabilities in the CompactPCI (cPCI) form factor.

#### Ports and Channels

The following table lists the number of DS0 and B-channels available per adapter:

Model | DS0 Channels | B-Channels
One-port T1 | 24 | 23
Two-port T1 | 48 | 46
One-port E1 | 30 | 30
Two-port E1 | 60 | 60

#### Adapters Per Server

Up to four DataFire PTE adapters can be installed on the same server, providing up to 240 B or DS0 channels.

#### Key Features

Here are some key product features:

- 56 Kbps support (both K56flex and V.90)
- B-channel concatenation, both within and across multiple adapters
- Direct Inward Dialing (DID) support