To take account of changes in ETR 018 when upgrading to EG 201 018: coding to support the audiographic conference and videoconference teleservice, and the user signalling bearer service.
- Edition:
- 1.2.3
- Published:
- 04/01/1999
- Number of Pages:
- 184
- File Size:
- 1 file , 840 KB
- Note:
- This product is unavailable in Russia, Ukraine, Belarus
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