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Voice Cards 12-7
FXS Card FXS Card User Screens and Settings
FXS-LS-R2E Office Originate - Incoming Calls (ls-R2e)
In this case, RxAB is Forward signaling. TxAB is Backward signaling. See Table 12-3.
Table 12-3. Incoming Calls (ls-R2e)
FXS-LS-R2E Station Originate - Outgoing Calls (ls-R2e)
In this case, RxAB is forward signaling, RxAB is Backward signaling. See Table 12-4.
Table 12-4. Outgoing Calls (ls-R2e)
The R1.5 Signaling is a special state machine for Russia to support R1.5 signaling. The IDLE
signaling is asymmetrical which means that the state machines have to distinguish the
direction of a call. Therefore there are different modes for incoming and outgoing calls that
can be used for a call in one direction. The two new types are supported in FXS Mode only
State T/R Stat T/R Cntl TxAB RxAB Note
Idle/Released Open TgRb 10 10
Seized Open Ringer 10 00* Ringer 2s on, 4s off
Seizure Ack Open or Loop 10 00 N/A
Answered Loop* TbRb 00 00
Clear Forward Loop TgRb 00 10* No action
Idle/Released Open* TgRb 10 10
Clear Back Open* TgRb 10 00
Idle/Released Open TgRb 10 10*
Blocked Open or Loop 11 10 N/A
State T/R Stat T/R Cntl TxAB RxAB Note
Idle/Released Open TgRb 10 10
Seized Loop* TgRb 00 10
Seizure Ack. Loop TgRb 00 10 N/A
Answered Loop TbRg 00 00* Battery Reversal
Clear Forward Open* TbRg 10 00
Idle/Released Open TgRb 10 10*
Clear Bcak Loop TgRb 00 10* Battery Normal
Idle/Released Open* TgRb 10 10
Blocked 10 11 N/A