Dialogic 6.2 Manuale Utente

Managing Calls Using IP Telephony

November 2009

221

The following are valid dial string examples for a SIP channel. 

Comments are shown in italics.

sip:Joe Smith<Joe@somewhere.com> 

sip:800-555-1212@somewhere.com 

sip:800-555-1212@myproxy.com 

Joe Smith<Joe@Somewhere.com> 

SIP endpoint address.

800-555-1212@Somewhere.com 

Endpoint gateway specified.

800-555-1212@myproxy.com 

800-555-1212 

+1 (800) 555-1212 

Will use default proxy server.

192.168.1.45 

Joe@192.168.1.1 

Valid, but not recommended.

sip:somewhere.com 

User part (left side of ‘@') is implied.

sip:joe@somewhere.com:9876 

An explicit port specification.

sip:011442871234@somewhere.com;user=phone

Specifies that user part is a phone number.

Using prefixed dial strings would have the same effect, as in:

fax –u 0 –s sip/t38://xxxxx@brooktrout.com foo.pkt

Using an alternative URI scheme:

fax -u 0 -s 781-555-1212@cisco-gw.brooktrout.com foo.pkt

¾ initiates the following sequence of events:

1. Call Control processes the URI dial string, sends it to the SIP 

protocol stack.

2. SIP stack places the SIP call to the Cisco XXXX Gateway.
3. The Cisco Gateway places the call on the PSTN, sending call 

progress information to the SIP stack and then finally connecting 

the call.

4. The fax is then sent and the call is torn down. 

No SIP proxy or redirect server is required if not configured or 

needed for point to point calls.

Again, using prefixed dial strings would have the same effect as in:

fax -u 0 -s sip://781-433-9454@cisco-gw.brooktrout.com 
foo.pkt