Specifications Unique To E1 Line Modules; Compliance With Ima Specifications; Table 9-5 E1-Specific Specifications; Table 9-6 Ima Specifications - Lucent Technologies Stinger MRT 19 Getting Started Manual

Specifications unique to E1 line modules

Table 9-5 lists specifications that apply only to E1 models.
Table 9-5. E1-specific specifications
Specification
Line code
Frame format
Line rate
Impedance
Cell rate
IMA differential delay

Compliance with IMA specifications

Table 9-6 details how the T1 and E1 modules conform to the IMA requirements of
the ATM Forum.
Table 9-6. IMA specifications
Specification
Mandatory Specifications
Optional Specification O-1
Optional Specifications O-2 and
O-3
Optional Specification O-4
Optional Specifications O-9 and
O-10
Optional Specification O-11
Optional Specification O-12
Optional Specification O-13
Stinger® MRT Getting Started Guide
Configuring T1 and E1 Trunk Modules
Description
High-density bipolar 3 (HDB3)
ITU-T G.704
2.048Mbps (± 50bps)
120 ohms or 75 ohms
4528 cells/second (UNI mode)
Up to 225ms among IMA group
constituents
Description
Compliant with all mandatory specifications
of v1.0 and v1.1 ATM Forum IMA
specifications.
Uniform distribution of IMA Control Protocol
(ICP) cells within an IMA frame.
User can configure IMA frame sizes of 32, 64,
128 (the default), or 256.
User can configure the IMA-ID and LID.
Supports Independent Transmit Clock (ITC)
and Common Transmit Clock (CTC) modes.
Indicates an incoming stuff event in the 4th,
3rd, and 2nd ICP cells preceding the event.
At least one ICP cell with correct cyclic
redundancy check (CRC) required to process
the incoming stuff event code.
User can configure maximum differential
delay among IMA group constituents.
T1 and E1 module specifications
9-39