Table Of Contents

Line Connections Between the Phone System and the Cisco Unity Servers

Analog Voice Line Connections for Failover

Requirements

Connections with D/41-Series Voice Cards

Connections with D/120-Series Voice Cards

Serial Data Cable Connections for Failover

Requirements

Pinouts for the Serial Data Cables

Serial Cables Between the Phone System and the Data Splitter

Serial Cables Between the Data Splitter and the Cisco Unity Servers

Connections for the Serial Data Cables

Line Connections Between the Phone System and the Cisco Unity Servers

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This appendix describes the line connections between a circuit-switched phone system and the voice cards on the primary and secondary Cisco Unity servers.

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Note For connections involving Cisco CallManager or SIP proxy servers, refer to the applicable Cisco Unity integration guide.

Integrations using PIMG units are not supported with Cisco Unity failover.

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This appendix contains the following sections:

•Analog Voice Line Connections for Failover

•Serial Data Cable Connections for Failover

Analog Voice Line Connections for Failover

Circuit-switched phone systems typically have 25-pair or 32-pair cables to provide analog voice connections. It is common that the cable is broken into individual lines that may attach to a punchdown cross-connect block (for example, 66-Type), or the cable may terminate with RJ-11 or RJ-14 connectors to accept analog voice lines.

A punchdown cross-connect block or line splitters may be used to split the analog lines. It is possible to use these devices in combination to manage and split the lines.

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Note No devices other than those described in this appendix should be connected to the analog voice lines for any voice messaging port. Otherwise, the ring equivalency number (REN) may be exceeded and the primary and secondary servers may not receive sufficient ring current to answer calls.

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Requirements

The following components are required for common configurations:

•Two or three analog voice patch cables for each port on the phone system.

•The appropriate device to split the analog lines:

–One or more punchdown cross-connect blocks (for example, 66-Type), installed and ready to accept lines.

–One line splitter for every one or two ports on the phone system. The line splitter accepts both RJ-11 and RJ-14 connectors.

•The appropriate connectors (RJ-11 and/or RJ-14) for the analog voice lines. Figure B-1 shows the pinout for the RJ-11 connector, and Figure B-2 shows the pinout for the RJ-14 connector.

Figure B-1 RJ-11 Connector Pinout

Figure B-2 RJ-14 Connector Pinout

Connections with D/41-Series Voice Cards

The following figures illustrate common configurations:

•Figure B-3 shows the connections between a phone system and the voice cards on the primary and secondary servers, through a punchdown cross-connect block.

•Figure B-4 shows the connections between a phone system with an RJ-11 connector and the D/41-series voice cards on the primary and secondary servers.

•Figure B-5 shows the connections between a phone system with an RJ-14 connector and the D/41-series voice cards on the primary and secondary servers.

Figure B-3 Connections from the Phone System Through a Punchdown Block to D/41-Series Voice Cards

Figure B-4 Connections for an RJ-11 Connector from the Phone System to D/41-Series Voice Cards

Figure B-5 Connections from an RJ-14 Connector on the Phone System to D/41-Series Voice Cards

Connections with D/120-Series Voice Cards

The following figures illustrate common configurations:

•Figure B-6 shows the connections between a phone system and the voice cards on the primary and secondary servers, through a punchdown cross-connect block.

•Figure B-7 shows the connections between a phone system with an RJ-14 connector and the D/120-series voice cards on the primary and secondary servers.

•Figure B-8 shows the connections between a phone system with an RJ-11 connector and the D/120-series voice cards on the primary and secondary servers.

Figure B-6 Connections from the Phone System Through a Punchdown Block to D/120-Series Voice Cards

Figure B-7 Connections for an RJ-14 Connector from the Phone System to D/120-Series Voice Cards

Figure B-8 Connections for an RJ-11 Connector from the Phone System to D/120-Series Voice Cards

Serial Data Cable Connections for Failover

Only serial integrations (for example, SMDI, MCI, or PBXLink) use RS-232 serial data cables.

Connecting RS-232 serial cables between a circuit-switched phone system and the primary and secondary Cisco Unity servers varies depending on the number of serial ports the phone system has.

Requirements

The following components are required for phone systems with only one serial port:

•Three RS-232 serial cables

•Data splitter unit

The following components are required for phone systems with multiple serial ports:

•Two RS-232 serial cables

Pinouts for the Serial Data Cables

The pinouts for the serial cables depend on whether the serial port on the phone system acts as data circuit-terminating equipment (DCE—it does not originate signals but acts as a modem) or as data terminal equipment (DTE—it originates signals).

Serial Cables Between the Phone System and the Data Splitter

If the serial port on the phone system acts as DCE, use an RS-232 serial cable with the pinout shown in Table B-1 for the data link between the phone system and the data splitter. The cable creates a DCE-to-DTE connection.

Table B-1 Pinout for Phone System Serial Port Acting as DCE 

Pin to the Data Splitter	Serial Port Pin Definition from the Phone System
1	DCD (data carrier detect)
2	RX (transmit)
3	TX (receive)
4	DTR (data terminal ready)
5	GND (signal ground)
6	DSR (data set ready)
7	RTS (request to send)
8	CTS (clear to send)
9	(no connection)

If the serial port on the phone system acts as DTE, use a null modem serial cable with the pinout shown in Table B-2 for the data link between the phone system and the data splitter. The cable creates a DTE-to-DTE connection.

Table B-2 Pinout for Phone System Serial Port Acting as DTE 

Pin to the Data Splitter	Serial Port Pin Definition from the Phone System
1	RTS (request to send)
1	CTS (clear to send)
2	TX (transmit)
3	RX (receive)
4	DSR (data set ready)
5	GND (signal ground)
6	DTR (data terminal ready)
7	DCD (data carrier detect)
8	DCD (data carrier detect)
9	(no connection)

Phone systems with multiple serial ports use the applicable pinout for the two serial cables connecting the phone system to the Cisco Unity servers.

Serial Cables Between the Data Splitter and the Cisco Unity Servers

The two serial cables between the data splitter and the primary and secondary Cisco Unity servers use wiring as shown in Table B-3.

Table B-3 Serial Cable Wiring Between the Data Splitter and the Cisco Unity Servers 

Pin from the Data Splitter	Pin to the Cisco Unity Server
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9

Connections for the Serial Data Cables

Figure B-9 shows the connections between the serial port on a phone system that has only one serial port to the serial ports on the primary and secondary Cisco Unity servers. Figure B-10 shows the connections between the serial ports on a phone system that has two serial ports to the serial ports on the Cisco Unity servers.

Note that the following figures do not show the analog voice lines, which are described in the "Analog Voice Line Connections for Failover" section.

Figure B-9 Serial Cable Connections from a Single Serial Port on the Phone System to the Serial Ports on the Cisco Unity Servers

Figure B-10 Serial Cable Connections from Multiple Serial Ports on the Phone System to the Serial Ports on the Cisco Unity Servers