Installation manual
IVX 128  Function 2: CO lines 
E.5 
2. 
Use the scroll keys to select the 
incoming signal type
 — either 
WINK START
 or 
IMMEDIATE START
. Press 
#
 to confirm. Default is 
WINK START
. 
INCOMING SIGNAL 
IMMEDIATE START> 
3. 
Use the scroll keys to select the 
trunk mode
 — 
2-WAY TRAFFIC, INBOUND ONLY
or 
OUTBOUND ONLY
. 
Press 
#
 to confirm. Default is 
2-WAY TRAFFIC
. 
TRUNK MODE 
2-WAY TRAFFIC > 
4. 
Use the scroll keys to set 
dial tone transmit
 to either 
OFF
 or 
ON
. Press 
#
 to confirm. 
Default is 
OFF
. 
DIAL TONE TRANS. 
OFF   > 
5. 
Use the scroll keys to set 
ringback transmission
 to either 
OFF
 or 
ON
. Press 
#
 to confirm. Default is 
OFF
. 
RINGBACK TRANS. 
OFF   > 
Outbound CO line groups 
Select the line group — 
9, 8, 71, 72, 73, 74, 75
 or 
76
 — and press 
#
 to confirm. Outgoing calls will 
be assigned from the highest CO to the lowest available. Default is 
9
. (You can designate a private 
line by entering an extension number instead of a line group in this step.) 
Answer ring assignment 
Lines can be programmed with four different ring assignments — Ring 1, Ring 3, Ring 5 and Ring 9. 
Each ring count can be programmed for up to 10 extensions, a department, a mailbox or an auto 
attendant branch ID. 
After all lines are programmed for day mode, the steps are repeated for night mode. 
Function 2122: T1 frame format and line coding 
Use the scroll keys to select the frame format and line coding — either 
ESF/B8ZS, SF/AMI, ESF/AMI
or 
SF/B8ZS
. Press 
#
 to confirm. Default is 
ESF/B8ZS
. 
P-CARD 3  DLC12 
FF/LC ESF/B8ZS > 
If a second DLC12 card is installed, the system will alternate to the next port card. Use the scroll 
keys to select the frame format and line coding. Press 
#
 to confirm. 










