Mitel 50005070 Instruction Manual download pdf (Page 270)

100

101

260

SX-200 ICP MX Technician’s Handbook

Test/Verify (E&M)

• Loop back to self whenever more than 1 E&M type V circuit is

available.

• Verify far-end circuits by activating near-end M lead and listening for

far- end dial tone.

• Verify near-end circuits by activating near-end E lead and listening for

near-end dial tone.

• Verify that appropriate voltages are present on E&M leads in each call

state.

Stop Dial E lead goes active; goes

inactive when ready to go

—

Receipt of Digits Audible Tones - Busy,

Reorder, Ringback dependent

upon digits dialed and called

party condition

Audible Tones - Busy,

Reorder, Ringback

generated and sent to

calling party dependent

upon digits received and

called party condition

Answer

Supervision

E lead goes active M lead goes active

Disconnect

Supervision

Near-end termination:

M lead goes inactive;

E follows

Far-end termination:

E lead goes inactive;

M follows

Near-end termination: M

lead goes inactive;

E follows

Far-end termination:

E lead goes inactive;

M follows

Table 54: E&M Trunk Summary (continued)

Signal E&M Trunk PBX Outgoing

E&M Trunk PBX

Incoming

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