Alcatel Omni Switch/Router User Manual page 998

Configuring an E1 Port
6) Transmit Clock Source
The source of the transmit clock. Loop timing means the receive clock (recovered from
receive data) is used as the transmit clock. Local timing indicates the local clock source
(generated from
The transmit clock source is related to the clocking mode used in circuit emulation services.
In synchronous clock mode, both sides of the
However, in SRTS and adaptive clocking, the
timing) and regenerates the clock locally (local timing) on the other end. In such a case, the
port receiving the clock from the network should be configured to
E1
other end of the link should be configured to
7) Loopback Mode
The loopback configuration for this port. Loopback configurations describe the relation
between the device attached to an
Framing functionality assembles
configured. Possible values are as follows:
8) Signalling
The type of signaling used on this port. Only the
ling) options are applicable to a circuit emulation service port. The
Channeling) option is used with external
are enabling Channel Associated Signalling, which is used with
Associated Signaling, timeslot 16 in frame 0 of the multiframe is used for multiframe synchro-
nization and control. Timeslot 16 of frames 1 through 15 are used to carry A, B, C, and D
signaling bits.
9) Trap Generation
Enables all of the
Page 33-10
s) is used as the transmit clock.
PLL
port and the framing functionality within the
E1
frames into multiframes, depending on how the port is
E1
The port is not in a loopback state. This is the typical live network state for an
E1 port.
The received signal at this E1 port is looped out of the port after passing
through the port's framing functionality. This state should only be used for
debugging purposes.
The received signal at this E1 port does not go through the port's framing
functionality, and is looped straight back out the port. This state should only
be used for debugging purposes.
The transmitted signal from the
nally. The signal passes through the E1 framing functionality before looping
back. This state should only be used for debugging purposes.
-based traps related to circuit emulation service ports.
SNMP
connection will use a local clock source.
E1
port receives the clock on one end (loop
E1
.
side of this port is looped back inter-
inwawrd
and (Channel Associated Signal-
ports. If you select the
ISDN
E1
and the
port.
E1
(Common Signal
option, then you
CAS
multiframes. In Channel