Administering E1 and T1 Services
Specifying channels for E1 and T1
MAX Administration Guide
5-17
In the following example, the clock source is taken from the first T1/PRI line, designated
dsl
0
.
Dsl#
indicates the maximum number of possible sources for the clock. The source can be
on Net/T1 slot cards. This MAX has three T1/PRI lines configured, so there are three possible
external sources for the clock.
LstSel
is further validation that the clock is being derived
from
Dsl#0
. After
Now
, a 2 indicates that Layer 2 is up for that line and is available as the
clock source. For example:
MAX> clocksource
Clock source is dsl 0
Dsl# 01234567890123456789012345678901234567890123456789
LstSel a?????????????????????????????????????????????????
Now 222-----------------------------------------------
You must reset the MAX unit to enable any changes to the Clock Source parameter. Also, if
more than one line has Clock Source set to
Yes
, remember that the clock source will be
derived from the first line with which the unit synchronizes. If you want to ensure that a
particular line is the source, make sure it has Clock Source set to
Yes
and that all other lines
have Clock Source set to
No
.
Specifying channels for E1 and T1
The telephone numbers that you specify in the Line N profile are the numbers local to your
unit. Do not enter the telephone numbers of the MAX unit you are calling. Enter those numbers
in the Call profile, Destination profile, or Connection profile.
In addition, when you are using E1 or T1 lines, any telephone numbers you specify must
correspond to those channels within the circuit that are available for data transmission. For
example, if channels 13 through 21 are allocated to a particular slot, you must specify the
telephone numbers for channels 13 through 21 in the Line N profile. Switched data channels do
not have to be contiguous within the circuit.
Verifying E1 and T1 parameter settings
Verify parameter settings in the MAX unit’s VT 100 interface that are E1-specific, T1-specific,
T1/PRI-specific, and PBX-T1-specific. Determine if the configuration of the unit is correct for
your T1 or E1 services environment. In some cases, you may need to contact your E1 or T1
service carrier for information about the correct settings you are required to specify.
E1-specific parameter settings
The VT100 interface of the MAX unit includes a NET/E1 menu. Specify E1 settings by using
one E1-specific parameter in the Line Config profile and four E1-specific parameters in the
Line N subprofiles in the Line Config profile. You must evaluate the settings of E1 parameters
as you verify the proper configuration of the unit. In some cases, the correct setting that you
must specify is determined by your E1 services carrier.