Atec TTC-2209 - Manual (Page 7)

7
DSX-1 ISDN
SWITCH
NIU/
SMART
JACK
ISDN
NETWORK
PBX
2209
2209
Verify or troubleshoot your customers'
ISDN PRI service using the 2209’s ISDN
testing capabilities
ISDN PRI Testing
After verifying the physical layer, testing during the provisioning of ISDN service is typically performed at the customer
premises by emulating a TE device, such as a PBX, to place and receive voice and data calls. Call status results and
progress reports provide an additional level of detail to ensure calls are successfully established. The reports are also
useful for troubleshooting calls that are not established. When multiple PRI lines are in use at the same location, it is
often necessary to perform back-up D-Channel and NFAS testing. By simultaneously providing the user with physical
layer (T1), layer 2 (LAPD), and layer 3 (Q.931) results as well as plain text decodes, the 2209 provides an efficient means
to verify or troubleshoot the ISDN PRI service. The 2209 tests PRI lines allowing the following:
• Test multiple call types including voice, 56K, 64K, Nx56K, Nx64K, and H0 to verify correct switch translations
for both inbound and outbound calls.
• Test data services (calls) are tested using BER testing patterns
• Place and receive calls
• Receive call status results which provide a summary of calls
• Receive English decodes of layer 3 cause codes
• Receive full layer 3 Q.931 decodes, with the ability to print
• Place and receive calls on either T1 (secondary or primary) for NFAS configurations
• Switch from Standby D-Channel to Inservice D-Channel for verification of D-Channel back-up operation in
NFAS configurations