I was able to find some MSDN links on our network that were set to B8ZS zero code suppression - NO on both sides. Otherwise all descriptors are similar other than opposites ends of each link being set to A/B for message control.


──────────────────────────────────────────────────────────── ───────────────────│
│ LINK DESCRIPTOR ASSIGNMENT │
│ │
│Digital Link Descriptor Number: 1 │
│ │
Description │ Value │
┌─────────────────────────────────────────────────────────── ┌──────────────────│
│Address for Message Control (A/B). . . . . . . . . . . . . B │
│BER - Maintenance Limit, 10**-n, n=(3,4,5,6) . . . . . . . 4 │
│BER - Service Limit, 10**-n, n=(3,4,5,6) . . . . . . . . . 3 │
│Data Call Alternate Digit Inversion (Yes/No) . . . . . . . Yes │
│Framing Losses in 24 hrs - Maintenance Limit (0-9000). . . 255 │
│Framing Losses in 24 hrs - Service Limit (0-9000). . . . . 9000 │
│Integrated Digital Access . . . . . . . . . . . . . . . . DPNSS │
│QSIG Private Network Access (Yes/No) . . . . . . . . . . . No │
│Vendor Inter-working Type . . . . . . . . . . . . . . . . . │
│Satellite Link Delay (Yes/No). . . . . . . . . . . . . . . No │
│Slip Rate - Maintenance Limit (0-9000) . . . . . . . . . . 255 │
│Slip Rate - Service Limit (0-9000) . . . . . . . . . . . . 7000 │
│Termination Mode (NT/LT). . . . . . . . . . . . . . . . . . │
│Send Malicious Call Indication to PSTN For Tagged Calls . . No │
│ │
│ DS1 Parameters: │
│Alarm Debounce Timer - Service Limit (300-3200). . . . . . 500 │
│B8ZS Zero Code Suppression - (Yes/No). . . . . . . . . . . Yes │
│ │
│ Universal T1 and Enhanced Dual T1 Card only: │
│Operation Mode (CSU/DSX-1) . . . . . . . . . . . . . . . . │
│CSU Tx Line Build-Out(0,7.5,15,22.5 db). . . . . . . . . . │
│DSX-1 line Length(0-133,134-266,267-399,400-533,534-655 ft) │
│Extended Super Frame (Yes/No). . . . . . . . . . . . . . . No │
│Inverted D channel ( DPNSS only ) (Yes/No) . . . . . . . . No │
│ │
│ Universal E1 and Enhanced Dual E1 only: │
│Operation Mode (CSU/DSX-1) . . . . . . . . . . . . . . . . │
│CSU Tx Line Build-Out(0,7.5,15,22.5 db). . . . . . . . . . │
│DSX-1 line Length(0-133,134-266,267-399,400-533,534-655 ft) │
│Extended Super Frame (Yes/No). . . . . . . . . . . . . . . No │
│Inverted D channel ( DPNSS only ) (Yes/No) . . . . . . . . No │
│ │
│ Universal E1 and Enhanced Dual E1 only: │
│CRC-4 enabled(Yes,No). . . . . . . . . . . . . . . . . . . No │
│E1 line Length(0-133,134-266,267-399,400-533,534-655 ft) . │
│E1 Impedance (75,120 ohms) . . . . . . . . . . . . . . . . │
│ │
│ Italian Parameters: │
│Digital Link Fault Delay Timer (0-360 sec) . . . . . . . . 240 │
│ │
│ Universal T1/E1 Coding Conversion Parameters: │
│Voice conversion (Nil/ADI/Invert/Inverted ADI). . . . . . . Nil │
│Data conversion (Nil/ADI/Invert/Inverted ADI). . . . . . . Nil │