Programming instructions

8.4. I
Direct In ward Dialing Line Examples
Example 1:
Jenny’s Bakery has the following CO numbering blocks:
555-3600 to 555-3619,
555-4520 to 555-4539,
555-1200 to 555-1399.
It will receive the 36nn and 45nn calls through CO lines l-5 and the lnnn calls through CO lines 6-8. The system
requires two DID blocks for use: block one for CO lines l-5, and block two for CO lines 6-8. The numbers in
DID block one have two unique digits and the numbers in DID block two have three unique digits. Assume that
DID block one is configured as wink start, tone dial, has a 2-digit string, and is named SALES. Assume DID
block two is configured as delay start, tone dial, has a 3-digit string, and is named SERVICE.
Example 2:
Ed’s Telephone Mart starts with 20 CO numbers 555-2320 to 555-2339. Only one DID block is used and is
configured as wink start, pulse dial, with a 2-digit string. As the company grows, they add another 20 CO
numbers 555-3420 to 555-3439. You cannot simply add these numbers to the existing DID block translation
table. This is because a 2-digit string will not uniquely specify which number was dialed. You must either treat
these two CO blocks as two different DID blocks or increase the expected digit string quantity to three.
Increasing the expected digits for a DID translation block deletes all entries in that
block, and you must reprogram the table.
Line Features Programming 8-75