ASCOM USER GUIDE
High Speed Base Band Modems
11
2.2.4 Desktop unit to Ascom AM70 Multiplexer
This arrangement connects the modem via the AM70 multiplexer on towards a network.
2.2.5 Ethernet LAN to Ethernet LAN
With the Ascom Bridge Router fitted, the modems can provide a WAN connection between
two Ethernet LANs via a 10BaseT port. Full routing and Network Address Translation
functionality precludes the need for external routing devices. In this mode, the timing
originates from the internal clock of the master.
1 or 2 copper pairs
master/slave modem master/slave modem
Ethernet LAN Ethernet LAN
Ascom AM-70
slave modem
Network
customer's
equipment
1 or 2 copper pairs
2
10 ASCOM USER GUIDE
High Speed Base Band Modems
2.2 EXAMPLE APPLICATIONS
The diagrams below illustrate some basic applications:
2.2.1 Desktop modem to desktop modem with no external timing
Either end of the link may be master, with the opposite end being the slave. The timing
originates from the internal clock in the master, and is sent out to the customer’s terminating
equipment.
2.2.2 Desktop modem to desktop modem with external timing
In this example the master modem accepts timing from the interface and uses this to time
the link.
2.2.3 Desktop unit to Ascom rack system
This system behaves like the above examples, but here one of the desktop units is replaced by
the Ascom rack, which can house 12 card units.
slave modem
master modem
customer's
equipment
customer's
equipment
1 or 2 copper pairs
V11, V24/V28, V35, V36,
RS530, 64K G703
1 or 2 copper pairs
master modem
slave modem
V11, V28, V35,
V36, RS530
customer's equipment
sourcing timing
customer's
equipment
V11, V24/V28, V35, V36, RS530
1 or 2 copper pairs
master/slave modem
master/slave modem
customer's
equipment
customer's
equipment
To Next Page
Loading...
General