User`s manual

Table Of Contents
SIP User's Manual 1. Overview
Version 5.0 25 October 2006
Proxy and Registrar Authentication (handling 401 and 407 responses) using Basic or
Digest methods. Accepted challenges are kept for future requests to reduce the
network traffic.
Single gateway Registration or multiple Registration of all gateway endpoints.
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 3711, Secured RTP and Key Exchange according to <draft-ietf-
mmusic-sdescriptions-12>.
Supports RFC 3489, Simple Traversal of UDP Through NATs (STUN).
Supports RFC 3327, Adding ‘Path’ to Supported header.
Supports RFC 3581, Symmetric Response Routing.
Supports RFC 3326, Reason header.
Supports RFC 4028, Session Timers in SIP.
Locating SIP Servers (RFC 3263).
An Offer/Answer Model with Session Description Protocol (SDP) (RFC 3264).
Supports network asserted identity and privacy (RFC 3325 and RFC 3323).
Supports Tel URI (Uniform Resource Identifier) according to RFC 2806 bis.
Remote party ID <draft-ietf-sip-privacy-04.txt>.
Supports obtaining Proxy Domain Name(s) from DHCP (Dynamic Host Control
Protocol) according to RFC 3361.
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>.
SIP URI: sip:”phone number”@IP address (such as 1225556@10.1.2.4, where
“122556” is the phone number of the source or destination) or
sip:”phone_number”@”domain name”, such as 122556@myproxy.com. Note that the
SIP URI host name can be configured differently per called number.
Supports RFC 4040, RTP payload format for a 64 kbit/s transparent data.
Can negotiate coder from a list of given coders.
Responds to OPTIONS messages both outside a SIP dialog and in mid-call.
Generates SIP OPTIONS messages as Proxy keep-alive mechanism.
Representing trunk groups in tel/sip Uniform Resource Identifiers (URIs) according to
<draft-ietf-iptel-trunk-group-04>.
The number of total and free channels is published in a 200 OK response to an
OPTIONS request. The gateway uses the X-Resource header in the following format:
‘X-Resource: telchs=100/240;mediachs=0/0’,
Where ‘telchs’ specifies the number of free tel channels / total tel channels.
For more updated information on the gateway’s supported features, refer to the latest
Mediant & TP Series SIP Digital Gateways Release Notes.