Vanguard Managed Solutions 6455 用户手册

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About the Vanguard 6435/6455

PRI Supplementary Service

Figure 1-8. Facilities Messages

Figure 1-9. Connectionless Message

Frame Relay

QSIG

QSIG

PBX

PBX

QSIG

101

201

401

PBX

3) PBX @201 sends Facility Message to Signal Forwar

ded Sta

te

2) User @101 Call User @201

4) PBX @101 tears down call @

201 an

d plac

es new

call to U

ser @401

1) User @201 has calls
forwarded to User @401

Frame Relay

QSIG

QSIG

PBX

PBX

QSIG

101

201

401

PBX

2) PBX @201 transfers call to Voice Mail

3) Connections Message sent to lig

ht Me

ssage

Light

1) User @201 calls
User @401, No Answer