Polycom SoundPoint IP 670

[mohamed.sabbah]

If we install the NBX in SIP mode with Polycom IP phones, will the Polycom HD Voice Technology work, if call is between Polycom IP phones?

[bosoxfan_1]

From what I read about Polycom HD Voice, it is wideband which should not be an issue with the NBX since

the audio is between the phones. However, you should check with Polycom to ensure they do not do anything in the SIP setup message that may cause an issue.

[mohamed.sabbah]

I have just checked the datasheet of Polycom SoundPoint IP 670, it supports IETF SIP (RFC 3261 and companion RFCs). However, I could not find specific information of NBX SIP support, except the general statement that it supports IETF SIP devices, applications and endpoints.