Specifications
Configuration and Maintenance Manual
90
Table 16: Dialing Issues
Problem or Error Probable Cause Corrective Action
The conference leader receives an 
error message when trying to add a 
participant’s outside phone number 
(not extension) using the Web 
interface. 
The conference leader attempted to 
add an outside phone number and 
did not use the correct dialing 
format.
The conference leader must type 
the complete phone number that 
includes country code and area 
code, if applicable, with an outside 
number when adding a participant 
to the conference using the Web 
interface.
An operator error message is 
audible in the conference: “It is not 
necessary to dial a 1 when dialing 
this number.” The audio may be 
different, depending on the service 
provider.
Dial Access String (DAS) rules 
have not been set up correctly. 
Add additional DAS rules to allow 
for the +1 to be stripped out from the 
local number. 
For example, 602 and 480 are two 
of the area codes for Phoenix, 
Arizona. 
For these area codes, add the 
following DAS Rules:
The result: any phone number 
starting with 1602 or 1480 will have 
the leading “1” stripped off, 
replacing it with a “9,” the number, 
@, and then the IP address. 
For example, assuming that the 
phone number to be dialed is 
1-602-555-1212 and the IP address 
configured in TCP/IP Settings is 
192.168.22.55:
16025551212 becomes 
96025551212@192.168.22.55
For more information, see 
“Configuring Dial Access String 
(DAS) Rules” on page 47.
Calls dialed from MCA fail. DAS rules contain errors. Check DAS rules for typing errors 
(missing dots, slashed, etc.). For 
more information, see “Configuring 
Dial Access String (DAS) Rules” on 
page 47.
An attempt to create a three-way 
call with two users and a 
conference fails. The two users are 
briefly connected to one another, 
but then that call drops as well. 
Other users on the conference hear 
garbled voice while the failure is 
occuring.
SIP default settings are incorrect.  Use the default SIP settings. For 
more information, see “Configure 
SIP Device Capabilities” on 
page 24.
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