Serial Port and User Equipment Connections
Memotec Inc. 5-5
5.4 WAN/User Port Specifications
• 1 built-in serial port, configurable as user or link, supporting V.35/V.11, TIA-232
(V.24), X.21, X.21 EU, TIA-449 (V.36) and TIA-530 interfaces
• Maximum speed without compression: 6 Mbps (6144 Kbps)
For a port with INTERNAL clocking, if the port speed is configured higher than
2 Mbps (2048 Kbps), the clock speed will be 3 Mbps (3072 Kbps) or 6 Mbps
(6144 Kbps), whichever is closer to the configured speed. For EXTERNAL
clocking all port speeds are supported.
• Link port maximum speed with compression: 896 Kbps
• HD-26 female connectors, gender and interface autodetect from custom HD-26
cables: V.35 DCE, V.35 DTE, X.21 DCE, X.21 DTE, X.21 EU DCE, X.21 EU
DTE, TIA-232 DCE, TIA-232 DTE, TIA-449 DCE, TIA-449 DTE, TIA-530
DCE, TIA-530 DTE
• Circuits: either leased, switched or Frame Relay
• Coding: NRZI or NRZ
• WAN port protocols: synchronous full-duplex HDLC, Frame Relay (FR-USER
for network connection), RFC-1490
• Synchronous user port protocols: HDLC, Synchronous PPP
• Frame Relay protocols: Frame Relay User (FR-USER), Frame Relay Network
(FR-NET), RFC-1490, UNI-DTE, UNI-DCE
• Frame Relay management: LMI, ANSI TI.617/Annex D, ITU-T Q.933/Annex A,
CLLM or disabled
• PVC switching: 300 PVCs, automatic DLCI discovery
• SVCs: Frame Relay telephony applications, one SVC per voice call.
• SNA: SDLC, LAN or Frame Relay RFC1490 (BAN, BNN); SDLC spoofing of
up to 64 PUs, type 1, 2.0, 2.1 and 4/5, local SDLC and LLC2 spoofing, SDLC-to-
LLC2 conversion
• Asynchronous user port protocols: ENQ/ACK, XON/XOFF, CTS/DTR, Trans-
parent, Reliable, Asynchronous PPP
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