CEPT - T/S 49-20 E
ISDN ISPBX-ISPBX Interface Layer 2 Specification Application of CEPT Recommendation T/S 46-20
active, Most Current
| Organization: | CEPT |
| Publication Date: | 1 January 1987 |
| Status: | active |
| Page Count: | 9 |
Document History
T/S 49-20 E
January 1, 1987
ISDN ISPBX-ISPBX Interface Layer 2 Specification Application of CEPT Recommendation T/S 46-20
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