ADC and V35, RS-232/V24, X21 41

ADCP-50-304 • Issue 19 • June 1999 • Section 3: PatchSwitch V.35

2 APPLICATION WITH EXISTING UNITS

The V.35 PatchSwitch modules can be identified by their gray color. A conversion board must be installed onto the chassis, as shown in Figure 3-1and Figure 3-2, before the V.35 module assembly is placed into service. If the conversion boards are not practical, user cables can be manufactured by local sources to terminate the standard V.35 interface into a DB-25 connector which can then be connected directly to the RDC-01/PSC-01 or RDC-02/PSC-02 chassis. Standard pin arrangements for the V.35 interface to the DB-25 connector can be found in Table 3-2. As defined further in this guide, optional leads are available on the conversion board to allow for any six of the normally unused leads on V.35 to be passed through the module. This option allows the user to configure to his specific needs.

Once the V.35 module is in service, it's use is the same as a regular PatchSwitch module. Test equipment such as a data line monitor can be connected to the V.35 patch Interface modules or the LED/Alarm options on the PSM-18 can be used as diagnostic functions with the PSM-17 using patch cords from one other module to the other. The DTE-A/DTE-B ports on the PSM-16 and PSM-17 can be used to provide bridge monitor on active circuits or patching into the “C” port can split the circuit and isolate towards the DCE leaving the “A” and “B” ports to isolate towards DTE-A and DTE-B respectively. The PSM-18 and PSM-19 interface modules can be used to attach to test equipment, patch in stand-by spare equipment, to be used as trunking jacks, or in the case of the PSM-18 LED/ALARM unit it can be used a diagnostic unit with the PSM-17.

	SWITCHING	BACKPLANE
	SWITCHING
	CIRCUIT
PATCH		V.35
PATCH	STATUS, DELAY, AND
MODULE	ALARM CIRCUITS
A		FEMALE A
	A	FEMALE A
	A
	B
B		FEMALE B
C		MALE C
C
	FRONT LOADING BOARD	REAR BOARD
		1623-A

Figure 3-1. Switch Module and Conversion Board

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