ISDN Interfaces

PRI/BRI Call Monitoring

PRI/BRI Call Monitoring

The Strata CTX ISDN circuit cards provide an RS-232 monitor function that enables you to monitor the ISDN D-channel call progress layer two and three messages (setup, connect, and release). This data can be monitored live, saved to a file, and/or printed using a PC with communication software.

The hardware connections and communication parameters for the ISDN monitor port are shown in Figure 7-32. Once this connection is setup and established, call monitoring data continues to be sent (on the fly) as PRI and BRI calls are originated or received.

Two sample printouts from the RPTU monitor are provided. Figure 7-32shows typical ISDN PRI start-up and synchronization sequences that occur at connection and power on. Figure 7-33shows typical ISDN PRI outgoing call setup and release sequences. BRI monitor data is similar to PRI monitor data.

The communication parameters for all call-monitor jacks are 9600 bps, 7, 1, even.

Strata PRI or BRI PCB Monitor Jack

ISDN Interfaces

Call-monitor jack

Dealer-supplied 6-wire telephone modular cord (cross-pinned)

PC with communication software - such as ProComm™

PC DB9 or

DB25 Com port

Toshiba PPTC9 or

PPTC25F

RD 1

TD 2

DSR 3

DTR 4

DCD 5

SG 6

Call-monitor jack (RJ12) pin numbering

4696

Note The RPTU, RBSU and RBUU ISDN interface PCBs each have a call-monitor jack. The pin numbering and communication parameters are the same for each call-monitor jack. The call-monitor jack on each PCB provides data only for the circuits of the PCB on which it appears.

Figure 7-32 Call-monitor Jack for the RPTU, RBSU, and RBUU

Call Monitor Output for ISDN

See the following figures for examples of Call Monitor Output printouts.

Strata CTX I&M 06/04

7-37

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Toshiba CTX28 manual PRI/BRI Call Monitoring, Call Monitor Output for Isdn