Labels:bulletin board | earth | reckoner | sky OCR: 8 Digital 64 kbit/s subscr iber Layer cir cu it functions access switch Layer functions Signalting handling and exchange contro functions Packet handling functional grouping Note 2 64 kbit/s digital Packet switching circuit with interworking access public functional grouping Note network packet t1102820 Note 1 These links pass through the 64 kbit/s circuit switch. This reguires further study Note optional. FIGURE 3c/Q.522 Type exchange connections option unctiors control iNote
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