Specifications
Table 9: T1/E1 Framer Supported Protocols and Variants
Interface Trunk Protocol Variant
T1 ISDN
Primary Rate
Interface (PRI)
DMS 100 n/a
DMS 250 n/a
NI-2 BellCore National ISDN
5ESS
GTD5
4ESS n/a
IDA-P
XNET Hybrid
QSIG QSIG ISO
T1/D4 Digital CO n/a
Digital DID n/a
Digital E&M n/a
MSDN/DPNSS MSDN/DPNSS n/a
E1 ISDN Primary
Rate Interface
(PRI)
Euro ISDN Euro-Standard
Euro-Numeris
Euro-Cayman
Telecom Italia
XNET Hybrid
QSIG QSIG ISO
ETSI
MSDN/DPNSS MSDN/DPNSS n/a
Table 10: Dual T1/E1 Framer and T1/E1 Combo Specifications
T1 Links E1 Links
Channels 23 B channels and 1 D channel per
ISDN PRI or QSIG link
24 B channels per T1/D4 link
30 B channels and 1 D channel per
ISDN PRI or QSIG link
Maximum Line Length 200 m (655 ft.) 200 m (655 ft.)
Line Impedance 100 ohms 75 or 120 ohms
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