CO-DS1 (DS1 CO Trunk)

CO-DS1 (DS1 CO Trunk)

Table 56. CO-DS1 (DS1 CO Trunk)

MO Name (in Alarm Log)

Alarm Level

Initial Command to Run*

Full Name of MO

CO-DS1

MAJOR**

test trunk group# member# l

DS1 CO Trunk

CO-DS1

MINOR

test trunk group# member# l

DS1 CO Trunk

CO-DS1

WARNING

test trunk group# member#

DS1 CO Trunk

Note: For Avaya G700 systems you must consult local records for the location and designation of the equipment rack where the G700 is mounted.

A Major alarm on a trunk indicates that alarms on these trunks are not downgraded by the set options** command and that at least 75 percent of the trunks in this trunk group are alarmed.

Table 56. CO-DS1 (DS1 CO Trunk)
MO Name (in Alarm Log)	Alarm Level	Initial Command to Run*	Full Name of MO
CO-DS1	MAJOR**	test trunk group# member# l	DS1 CO Trunk
CO-DS1	MINOR	test trunk group# member# l	DS1 CO Trunk
CO-DS1	WARNING	test trunk group# member#	DS1 CO Trunk
Note: For Avaya G700 systems you must consult local records for the location and designation of the equipment rack where the G700 is mounted.
A Major alarm on a trunk indicates that alarms on these trunks are not downgraded by the set options** command and that at least 75 percent of the trunks in this trunk group are alarmed.

The MM710 supports E1/T1, and delivers the same functionality as the DEFINITY TN464 circuit pack.

Many trunk problems are caused by incorrect settings of parameters on the trunk group administration form. Settings must be compatible with the local environment and with parameter settings on the far-end. Refer to "Chapter 12, Managing Trunks, in the Administrator's Guide for Avaya MultiVantage^TM Software, 555-233-506" for information on how to administer trunks. The Application Notes section of that book shows the correct settings for administrable timers and other parameters on a country-by-country basis.

A DS1 CO (central office) trunk provides a link for digitized voice or data communications between the system and a central office switch. There are two types of DS1 interfaces:

24 DS0 channels on a 1.544 Mbps link
31 DS0 channels + 1 framing channel on a 2.048 Mbps link
32-channel mode is supported on TN464 Media Modules and on MM710 Media Modules.

The CO-DS1 maintenance object monitors and maintains a CO trunk port on a MM710 Interface Media Module. See MG-DS1 in this chapter for more information about this Media Module. The DS1 Media Module supports low level CO trunk signaling interfaces for both ground-start and loop-start trunks. This maintenance strategy covers the in-line errors log, initialization tests, periodic tests, scheduled tests, demand tests, and alarm resolution.

Three trunk service states are specified by DS1 CO trunk maintenance:

Table 57. Trunk Service States �
out-of-service	The trunk is in a deactivated state and cannot be used for either incoming or outgoing calls.
in-service	The trunk is in an activated state and can be used for both incoming and outgoing calls.
disconnect (ready-for-service)	The trunk is in an activated state but can only be used for an incoming call.