Lucent Technologies 6.1 manual Codes for Line/Trunk Jacks Jack Type Code Line/Trunk Type, T1-DID

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998
3 Lines/Trunks
Identifying Line/Trunk Jacks	Page 3-5

Planning Form Instructions

Refer to the completed Control Unit Diagram on Form 1 to mark line/trunk jack types on Form 2c:

1.For each module with line/trunk jacks noted in the Control Unit Diagram (beginning with Slot 01), write in the type of module and its slot number in the Module Type and Slot No. column of Form 2c; after the appropriate Log. ID number, draw a line to indicate the logical IDs (and therefore, the line/trunk jacks) that correspond to that module.

If the system has 100D (DS1) modules, keep in mind that even though the module has only one physical jack, the 100D module supports up to 24 endpoints. Therefore, 24 logical IDs and associated line/trunk numbers are assigned to each module.

The 800 NI-BRI module supports up to 16 endpoints, therefore 16 logical IDs and associated line/trunk numbers are assigned to each 800 NI-BRI module even though the module has only eight physical jacks.

2.In the Jack Type column of Form 2c, for all modules except 100D modules, write the jack type for each logical ID. Use the codes shown in Table 3–2.

Table 3–2. Codes for Line/Trunk Jacks

Jack Type Code	Line/Trunk Type
LS	Loop-start
GS/LS	Ground-start/loop-start
DID	DID
Tie	Tie
T1-GS	DS1 connectivity used to emulate GS
T1-LS	DS1 connectivity used to emulate LS
T1-Tie1	DS1 connectivity used to emulate tie or for digital data service
T1-DID	DS1 connectivity used to emulate DID
T1-S56	DS1 connectivity used for digital data
PRI	DS1 connectivity used for PRI service
BRI	NI-1 BRI

1.T1 Switched 56 digital data is also available using T1-Tie trunks. See the “Tie Trunks” section later in this chapter.

3.For systems that include a 100D module, do one of the following in the Jack Type column:

■If the module will emulate trunks or will be used for digital data transmission, write the appropriate jack type code (see Table 3–2) for the channels being used (for example, T1-LS, T1-TIE, or T1-S56), or write T1 if the channels are not being used at this time.

■If the module will connect services (such as, Megacom and Megacom 800), write PRI for all 24 logical IDs of PRI-type modules.

You may now match incoming trunks to the available jacks as described in the next section.