ADTRAN 1200051L2, 61200051L1, 1200051L6, 1200051L5 user manual Setting the Busy Out Port

Chapter 6. Configuration

Setting the LDN

This option allows the entry of 0, 1, or 2 LDNs. The LDN is used when receiving BONDING calls or receiving separate calls for each DTE connection. The LDN is the seven-digit local phone number assigned to the line.

When entering an LDN using the front panel, use the Up and Down arrow keys to select between LDN DTE#1 and LDN DTE#2. Press Enter to select the DTE. Use the keypad to enter the LDN. The Up and Down arrow keys edit the number if nec- essary. To store the number press Enter. To cancel a number, use the Down arrow to backspace through the number, then press Enter. After entering each LDN, press Enter. To abort changes at any time, press Cancel. The changes are discarded, leaving the original number unchanged.

When using a VT 100 terminal, select the option number corre- sponding to the appropriate DTE and press Return.

SPID and LDN numbers are entered in pairs and should not be crossed between the two DTE ports. Each SPID has a unique LDN. Enter a SPID-LDN pair for DTE#1 and a separate SPID- LDN for DTE#2. Ensure that the SPID for DTE#1 matches the LDN for DTE#1, and the SPID for DTE#2 matches the LDN for DTE#2.

Disconnect the network interface from the unit before initially entering and/ or altering the SPIDs or LDNs.

Setting the Busy Out Port

The Busy Out Port is recommended for use in Hunt Group appli- cations only. This option allows the ISU 2x64 to command the switch to no longer route calls to the 2x64. The Busy Out Port requires the ISDN line to be configured by the telephone com- pany to support the Make Busy feature and a feature button number to be assigned for activating and deactivating busy sta- tus.

61200051L1-1D ISU 2x64 Dual Port ISDN Service Unit User Manual 33