Patton electronic 3120 - Manual (Page 144)

10 • Drop and Insert Model 3120 RAS Administrators’ Reference Guide
144 How Drop and Insert works
Figure 59. Drop and insert diagram
Note This functionality can only be done on robbed bit lines. You can not
perform drop and insert on a PRI line.
Using Drop and Insert
1. Configure each WAN port doing drop and insert. Links 1 and 2 perform drop and insert together. Links 3
and 4 perform drop and insert together.
The line type/coding for all of the lines can be either D4/AMI or ESF/B8ZS
WAN A can have the following types of line signalling:
– EMWinkStart
– GroundStart
– LoopStart
– EMImmediate
WAN B and x on PBX must be configured identically.
WAN B can have the following types of line signalling:
– EMWinkStart
– EMImmediateStart
2. Set the Desired Function for each channel on WAN A and B to dropInsert(7) (using channel assignment
under the T1/E1 link that is going to be performing drop and insert). The channels on WAN A selected
for drop and insert must match the channels on WAN B selected for drop and insert.
Note We do not send digits with the EMWinkStart signalling. What this
means is that you can not direct the inbound call to a specific exten-
sion on the PBX.