T1 CAS Ambassador Agreement Archetype In this example, you accept been asked
to configure a T1 ambassador for a articulation aperture according to the afterward network
requirements:
■ T1
■ Framing = ESF
■ Band cipher = B8ZS
■ Alarm antecedent = PSTN
■ DS0 accumulation = 1 will advance 12 time slots with E&M wink-start signaling
■ Articulation Port
■ Call advance tones = US
■ Companding accepted = u-law
To configure ambassador settings for agenda T1/E1 articulation ports, use the afterward steps:
Step 1. Enter ambassador agreement mode.
Router(config)#controller {t1 | e1} slot/port
Step 2. Select anatomy blazon for T1 or E1 line.
T1 Lines:
Router(config-controller)#framing {sf | esf}
E1 Lines:
Router(config-controller)#framing {crc4 | no-crc4} [Australia]
Use this command in configurations in which the router or admission server is
intended to acquaint with T1 or E1 apportioned abstracts lines. The service
provider determines the framing blazon that is appropriate for your T1/E1 circuit.
This command does not accept a no form.
Step 3. Configure the alarm source.
Router(config-controller)#clock antecedent {line [primary | bits] |
internal | free-running}
The band keyword specifies the alarm antecedent is acquired from the alive line
rather than from the free-running centralized clock. The afterward rules administer to
clock sourcing on the ambassador ports:
■ When both ports are set to band clocking with no primary specification,
port 0 is the absence primary alarm source, and anchorage 1 is the absence secondary
clock source.
■ When both ports are set to line, and one anchorage is set as the primary clock
source, the added anchorage is by absence the advancement or accessory antecedent and is
loop-timed.
■ If one anchorage is set to alarm antecedent band or alarm antecedent band primary, and
the added is set to alarm antecedent internal, the centralized anchorage recovers clock
from the alarm antecedent band anchorage if the alarm antecedent band anchorage is up. If it is
down, the centralized anchorage generates its own clock.
■ If both ports are set to alarm antecedent internal, alone one alarm source
exists: internal.
Step 4. Specify the band encoding to use.
T1 Lines:
Router(config-controller)#linecode {ami | b8zs}
E1 Lines:
Router(config-controller)#linecode {ami | hdb3}
Use this command in configurations in which the router or admission server must
communicate with T1 apportioned abstracts lines. The T1 account provider determines
which band cipher type, either ami or b8zs, is appropriate for your T1 circuit.
Likewise, the E1 account provider determines which band cipher type,
either ami or hdb3, is appropriate for your E1 circuit.
Step 5. Define the T1 channels for use by aeroembolism articulation calls and the signaling
method the router uses to affix to the PBX or CO.
Router(config-controller)#ds0-group ds0-group-number timeslots
timeslot-list [service service-type] blazon {e&m-fgb | e&m-fgd | e&mimmediate-
start | fgd-eana | fgd-os | fxs-ground-start | fxs-loop-start
| none | r1-itu | r1-modified | r1-turkey}
The ds0-group command automatically creates a analytic articulation port. The
resulting analytic articulation anchorage will be 1/0:1, area 1/0 is the bore and slot
number and :1 is the ds0-group-number altercation you accredit in this step.
Step 6. Activate the controller.
Router(config-controller)#no shutdown