topic one number for both PSTN and SIP in Voice Systems and Accessories - Small Business https://community.cisco.com/t5/voice-systems-and-accessories-small-business/one-number-for-both-pstn-and-sip/m-p/3257924#M24507 <P>Is it possible to configure a UC320w to use one phone number when using both a PSTN and a SIP trunk?? trying to cut down on confusion when clients see different callback numbers...etc</P> Thu, 21 Mar 2019 12:07:33 GMT don bellamy 2019-03-21T12:07:33Z one number for both PSTN and SIP https://community.cisco.com/t5/voice-systems-and-accessories-small-business/one-number-for-both-pstn-and-sip/m-p/3257924#M24507 <P>Is it possible to configure a UC320w to use one phone number when using both a PSTN and a SIP trunk?? trying to cut down on confusion when clients see different callback numbers...etc</P> Thu, 21 Mar 2019 12:07:33 GMT https://community.cisco.com/t5/voice-systems-and-accessories-small-business/one-number-for-both-pstn-and-sip/m-p/3257924#M24507 don bellamy 2019-03-21T12:07:33Z one number for both PSTN and SIP https://community.cisco.com/t5/voice-systems-and-accessories-small-business/one-number-for-both-pstn-and-sip/m-p/3257925#M24508 <HTML><HEAD></HEAD><BODY><P>Hi Don,</P><P></P><P>One suggestion would be to contact your SIP provider and see if they would be willing to configure your SIP trunk caller ID to send your main FXO number for outbound calls.</P><P></P><P>Chris</P></BODY></HTML> Tue, 03 Jan 2012 17:58:55 GMT https://community.cisco.com/t5/voice-systems-and-accessories-small-business/one-number-for-both-pstn-and-sip/m-p/3257925#M24508 Christopher Edgeworth 2012-01-03T17:58:55Z