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Mediant 2000 SIP User's Manual
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48 Channels on 2 T1 spans with gateway-1 only
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96 Channels on 4 T1 spans with gateway-1 only
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192 Channels on 8 T1 spans with gateway-1 only
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384 Channels on 16 T1 spans with gateway-1 and gateway-2
1.2
SIP Overview
SIP is an application-layer control (signaling) protocol used on the Mediant 2000 for creating,
modifying, and terminating sessions with one or more participants. These sessions can include
Internet telephone calls, media announcements and conferences.
SIP invitations are used to create sessions and carry session descriptions that enable participants
to agree on a set of compatible media types. SIP uses elements called proxy servers to help
route requests to the user's current location, authenticate and authorize users for services,
implement provider call-routing policies and provide features to users.
SIP also provides a registration function that enables users to upload their current locations for
use by proxy servers. SIP, on the Mediant 2000, complies with the IETF (Internet Engineering
Task Force) RFC 3261 (refer to http://www.ietf.org).
1.3
Mediant 2000 Features
This section provides a high-level overview of some of the many Mediant 2000 supported
features.
1.3.1
General Features
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Superior, high quality SIP PSTN gateway for Voice and fax over IP calls.
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Up to 16 E1/T1/J1 digital spans supporting various PRI and CAS protocols.
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Compliant with SIP (RFC 3261).
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Coders include: G.711, G.723.1, G.726, G.729A and NetCoder at 6.4 to 8.8 kbps, negotiable
per channel.
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T.38 fax with superior performance (handling a round-trip delay of up to nine seconds).
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Echo Canceler with up to 128 msec tail length.
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Silence suppression with Comfort Noise Generation.
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Web management for easy configuration and installation.
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Simple Network Management Protocol (SNMP) and Syslog support.
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Simple Network Time Protocol (SNTP) support, the time-of-day can be obtained from a
standard SNTP server.
1.3.2
Hardware Features
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Two 10/100 Base-TX Ethernet interface connections to the network, providing network
redundancy.
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Compact, rugged 19-inch rack mount unit, one U high (1.75" or 44.5 mm), with two
compactPCI
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Optional cPCI slot for third-party CPU board.
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TP-1610/H.323 hot-swap cPCI board.
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Optional dual redundant AC or a single DC power supply.
Version 4.4
™
(cPCI) slots.
15
1. Overview
July 2005
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