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Table 7: Ground-Start Signaling at FXO Interface for Call Initiated by the

FXS Interface (continued)

Signaling Bits from FXOSignaling Bits to FXO

0111FXO goes off-hook (closes

loop)

0111Duration of call

Table 8: Ground-Start Signaling at FXS Interface for Call Initiated by the

FXS Interface

Signaling Bits from FXSSignaling Bits to FXS

01 (A=0, B=1)11 (A=1, B=1)Idle (before call starts)

0100/01 (B-bit toggles)FXS goes off-hook (grounds

tip and sends AC ring signal)

1101FXO goes off-hook (closes

loop)

1101Duration of call

Table 9: Ground-Start Signaling at FXS Interface for Call Initiated by the

FXO Interface

Signaling Bits from FXSSignaling Bits to FXS

01 (A=0, B=1)11 (A=1, B=1)Idle (before call starts)

0011FXO grounds ring

0001FXS goes off-hook (grounds

tip and sends AC ring signal)

1101FXO goes off-hook (closes

loop)

1101Duration of call

Documentation

CTP2000 Serial Interface Modules on page 11•

• CTP2000 T1/E1 Interface Module on page 12

• CTP2000 Compression Interface Module on page 12

• CTP2000 Compression 2 High Density Interface Module on page 13

• CTP2000 4WE&M Interface Module on page 14

• CTP2000 8P-IRIG Interface Module on page 25

CTP2000 Hardware Documentation

Juniper CTP2024 User Manual

Other manuals for Juniper CTP2024