AUDIX System Administration

13-13

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6000 — where the local system uses a DCP channel to call itself. The 6000 is an extension number assigned to one of the remote system network channels (RS-232 or DCP) or to a hunt group of channels.

9+2346000 — where the local system uses a DCP channel to call a remote system located at a remote switch, but in the same local dialing area. The 234 is the office code assigned to the remote switch, and 6000 is the same as the previous example. The ‘‘9’’ is the central office (CO) access code at the local switch. The ‘‘+’’ is a pause for dial tone.

8+7896000 — where the local system uses a DCP channel to call a remote system located at a different network node. The ‘‘8’’ is the network access code at the local switch. The 789 is the network access code for the remote switch.

<number>,,,,, — where the five commas following the number the local system dials to reach the remote system are used to cause the system to pause (each comma causes a 2-second pause). Pauses are needed for correct operation in certain modems such as the Telebit T1000, which requires a 10- second pause after dialing before starting its internal timers.

ATDT 6000 — where the local system uses an RS-232 channel and modem to call a colocated system. The attention code (ATDT) is required by the modem (Hayes dialing). The 6000 is the same as the previous examples.

ATDT 9,2346000 — where the local system uses an RS-232 channel and modem to call a remote system located at a remote switch but in the same local dialing area. The ‘‘,’’ is a pause for a certain number of seconds. This number is defined in the modem manual.

*23 — where the local system uses a DCP channel to call a MERLIN II acting as the DCP interface for a non-DCP switch. This string is used to dial a remote system that is colocated at the MERLIN II (port 23).

(blank) — where the local system uses a dedicated RS-232 channel to access a colocated remote AUDIX system. If another type of system is called, a dial string may be required.

The type of channel used for calling out of the AUDIX system is determined by the connection type assigned earlier. The loop used to get the call back to the AUDIX system and the type of channel used once the call gets there is determined by the dial string. See Chapter 14 for details on testing the network.

The following characters, valid only on R1V5 or later systems when a TN539 or TN539B is present, have special meaning within an AUDIX system dial string. They must be enclosed within double quotation marks, for example, "x". These characters are not passed on to the switch, modem, or endpoint in a network call. They are interpreted by the TN539 or TN539B ACCE. Special characters are described below:

"W" indicates that multiple-stage dialing is to be used and that AUDIX system should wait for another dial prompt (dial tone or equivalent message) before sending the subsequent digits or characters.

"B" in the dial string will be replaced with a BREAK character by the AUDIX system. This allows the AUDIX system, for example, to send a BREAK to a modem.

"CR" in a dial string will be replaced by the AUDIX system with a carriage return character.

"LF" in a dial string will be replaced with a line feed character.

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AT&T 585-300-903 manual 13-13