Verilink XEL XSP-100 SHARK IAP (9SA-USRS-9.0R1.02) Product Manual - Manual (Page 132)

Chapter 6: Using the Command Line Interface (CLI)
Chapter 6-16 XEL P/N & Release 9SA-USRS-9.0R1.02 SHARK™ IAD User’s Guide
Figure 3: SHARK™ IAD T1 Loopbacks
T1 interface
Cross Connect
LIU Framer
Jitter
Attn
Framer Loop Back
WAN or
LAN
T1 interface
Cross Connect
LIU Framer
Jitter
Attn
Local Loop Back
WAN or
LAN
T1 interface
9SA-T100-000 or 9SA-XC2T-V01
Cross Connect
LIU Framer
Jitter
Attn
Remote Loop Back and codes NI, CSU, FDL Line, and FDL Network
WAN or
LAN
T1 interface
Cross Connect
LIU Framer
Jitter
Attn
Payload Loop Back and code FDL Payload
WAN or
LAN
9SA-T100-000 or 9SA-XC2T-V01
9SA-T100-000 or 9SA-XC2T-V01
9SA-T100-000 or 9SA-XC2T-V01