Nokia Network Voyager, Reference Manual

Page: 167 / 700

Voyager Reference Guide 167
Configuring an E1 Interface for PPP
1.
Click
C
ONFIG
on the home page.
2.
Click the Interfaces link.
3.
Click the physical interface link you want to configure in the
P
HYSICAL
column.
Example —
ser-s2p1
4.
(Optional) Click
O
N
or
O
FF
in the
I
NTERNAL
C
LOCK
field to set the
internal clock on the E1 device. Click A
PPLY
.
If you’re connecting to a device or system that does not provide a clock
source, set
I
NTERNAL
C
LOCK
to
O
N
; otherwise, set it to
O
FF
. Internal
clocking for E1 is fixed at 2.048 Mbits/sec. To configure slower speeds,
you must configure fractional E1 on the
Advanced E1 CSU/DSU Options
page.
5. Click the F
ULL
D
UPLEX
or L
OOPBACK
radio button in the C
HANNEL
M
ODE
field.
Full duplex is the normal mode of operation.
6.
Click the
AMI
or
HDB3
radio button in the
E1 E
NCODING
field to select
the E1 encoding. Click A
PPLY
.
This setting must match the line encoding of the CSU/DSU at the other
end of the point-to-point link.
7.
Click the
E1
(channel 0 framing) or
N
O
F
RAMING
radio button in the
E1
F
RAMING
field to select the E1 Framing format.
Use E1 framing to select whether timeslot-0 is used for exchanging
signaling data.
8.
Click the
O
N
or
O
FF
radio button for the
E1 CRC-4 F
RAMING
field.