Altec ISDN Socket Modem AL5068S-3V - Manual (Page 8)

AL5068S Designer’s Guide
No. AL5068S-E00-105 Altec Electronic AG Seite 8 / 25
2.3 ISDN Protocols:
ISDN Channel Protocols
D-channel protocols:
DSS1
X.31 D-channel
B-channel protocols:
HDLC (transparent)
PPP sync-async (RFC 1662)
X.75
Bit-transparent
X.31 / X.25
V.110
V.120
2.4 Firmware Updates
Firmware updates can always be affected via the local serial interface.
2.5 Supported Interfaces
The major hardware signal interfaces of the AL5068S Series Socket Modem
are illustrated in Figure 1-1.
Figure 1-1. Typical Serial Block Diagrams
Modem
Module
TTL
Serial Interface
Indicators
Leds
RJ45
Modular Jack
8 pole
5
3
4
4
Optional IOM-2
Interface for
external PCM
Codecs
4
Test Interface
(optional)
4