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Remote Access 79

Modules supporting facsimile transmission are responsible for the following:

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fax speed detection and adjustment

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protocol conversion from G3 Fax to RTP payload for fax data transfer

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T.30 fax protocol support

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T.38 fax-over-IP protocol

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V.21 channel 2 binary signaling modulation and demodulation

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High-level Data Link Control (HDLC) framing

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V.27 term (2400/4800 bps) high speed data modulation and

demodulation

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V.29 (7200/9600 bps) high speed data modulation and demodulation

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V.17 (14390 bps) high speed data modulation

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V.21 channel 2 detection

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Multi-channel operation support

If two ends support T.30 protocol, they are compatible only if external factors

(for instance, delay and signal quality) permit. Only IP Trunk 3.01 (and

later) node fax calls are supported.

IP Trunk 3.01 (and later) supports a maximum fax speed of 14.4 Kbps.

Remote Access

Remote Access is supported on IP Trunk 3.01 (and later). Remote Access

allows an TM 3.1 user with no IP Trunk 3.01 (and later) data, including

Nortel support personnel, to manage the IP trunk card remotely.

Management and support of the IP Trunk 3.01 (and later) network depend

on IP networking protocols including SNMP, FTP, and Telnet. The Nortel

Netgear RM356 modem router or equivalent should be installed on the

ELAN subnet in order to provide remote support access for IP Trunk 3.01

(and later) and other IP-enabled Nortel products.

The Nortel Netgear RM356 modem router integrates the functions of a V.90

modem, a PPP remote access server, an IP router, and a 4-port 10BaseT

Ethernet hub, and provides a range of security features that may be

conﬁgured so as to comply with the customer’s data network security policy.

Do not install a modem router on the ELAN subnet without the explicit

approval of the customer’s IP network manager. The RM356 modem router

is not secure unless it is conﬁgured correctly according to the customer’s

network security policy and practices.

Nortel Communication Server 1000

IP Trunk Fundamentals

NN43001-563 02.01 Standard

Release 5.5 21 December 2007