Nortel Networks TP-1610 SIP user manual Mediant 2000 SIP User’s Manual Overview

Mediant 2000 SIP User’s Manual 1. Overview

•Works with Proxy or without Proxy, using an internal routing table.

•Fallback to internal routing table if Proxy is not responding.

•Supports up to four Proxy servers. If the primary Proxy fails, the Mediant 2000 automatically switches to a redundant Proxy.

•Supports Proxy server discovery using Domain Name Server (DNS) SRV records.

•Proxy and Registrar Authentication (handling 401 and 407 responses) using Basic or Digest methods.

•Supported methods: INVITE, CANCEL, BYE, ACK, REGISTER, OPTIONS, INFO, REFER, UPDATE, NOTIFY, PRACK and SUBSCRIBE.

•Modifying connection parameters for an already established call (re-INVITE).

•Working with a Redirect server and handling 3xx responses.

•Early Media (supporting 183 Session Progress).

•PRACK reliable provisional responses <RFC 3262>.

•Call Hold and Transfer Supplementary services using REFER, Refer-To, Referred-By, Replaces and NOTIFY messages.

•Supports RFC 3327 – Adding “Path” to Supported header.

•Supports RFC 3581 – Symmetric Response Routing.

•Session Timer <draft-ietf-sip-session-timer-10.txt>.

•RFC 2833 Relay for Dual Tone Multi Frequency (DTMF) digits, including payload type negotiation.

•DTMF out-of-band transfer using:

INFO method <draft-choudhuri-sip-info-digit-00.txt> INFO method, compatible with Cisco gateways

NOTIFY method <draft-mahy-sipping-signaled-digits-01.txt>.DTMF out-of-band transfer using INFO method (draft-choudhuri-sip-info-digit-00.txt)

•Can negotiate coder from a list of given coders.

•Supported coders:

G.711	A-law 64 kbps	(10, 20, 30, 40, 50, 60, 80, 100, 120 msec)
G.711	∝-law 64 kbps	(10, 20, 30, 40, 50, 60, 80, 100, 120 msec)
G.723.1 5.3, 6.3 kbps		(30, 60, 90, 120 msec)
G.726	32 kbps	(10, 20, 30, 40, 50, 60, 80, 100, 120 msec)
G.729A 8 kbps		(10, 20, 30, 40, 50, 60, 80, 100 msec)

G.729B is supported if Silence Suppression is enabled.

NetCoder 6.4, 7.2, 8.0 and 8.8 kbps (20, 40, 60, 80, 100, 120 msec).

EVRC* 8, 4, 1 kbps	(20, 40, 60, 80, 100, 120 msec)
AMR* 4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.2, 12.2 kbps		(20 msec)
Transparent	(20, 40, 60, 80, 100, 120 msec)

*When EVRC (Enhanced Variable Rate Codec) and AMR (Adaptive Multi-Rate) are used, the number of available gateway channels is reduced (refer to the documentation of the parameter ’CoderName’ in Table 6-3).

For more updated information on the gateway’s supported features, refer to the latest Mediant 2000 & TP-1610 SIP Release Notes.

Version 4.4 17 July 2005