19-3
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter19 Configuring Circuit Emulation Services
Overview of CES T1/E1 Interfaces
• atmfCESLostCells
• atmfCESMisinsertedCellsz
• atmfCESRetryLimit
• atmfCESLocalAddr (not writeable)
Framing Formats and Line Coding Options for CES Modules
The CES modules support the framing formats and line coding options shown in Table 19-1.
Default CES T1/E1 Interface Configuration
The following defaults are assigned to all CES T1/E1 interfaces:
Loopback = no loopback
Signalling mode = no signalling
Transmit clock source = network-derived
Data format = clear channel
Line build-out (LBO) = 0 to 110 feet
Cell delay variation = 2000 microseconds
Channel associated signalling (CAS) = FALSE
Partial fill = 47
AAL1 service type = unstructured
AAL1 clock mode = synchronous
Table19-1 CES Module Framing and Line Coding Options
Module Framing Options and Description Line Coding Options
CES T1 port adapter Super Frame (SF)
Extended Super Frame (ESF)
ami or b8zs
(b8zs is the default)
CES E1 port adapter (120-ohm)
and
CES E1 port adapter (BNC)
E1 CRC multiframe (e1_crc_mf_lt).
Configures the line type to
e1_crc_mf, without channel
associated signalling (CAS) enabled.
E1 CRC multiframe
(e1_crc_mfCAS_lt).
Configures the line type to
e1_crc_mf, with CAS enabled.
E1 (e1_lt).
Configures the line type to e1_lt.
E1 multiframe (e1_mfCAS_lt).
Configures the line type to e1_mf,
with CAS enabled.
ami or hdb3
(hdb3 is the default)