Cisco phones not updating

02-Jul-2020 04:56

See also: "Connecting to the outside world," below.Unlike most SIP devices, these phones send SIP requests from a high-numbered source port, but expect the response back on port 5060.Both models appear to support three simultaneous SIP streams/channels/calls IANAL, but it is technically possible to use a "spare" part (e.g.CP-7961G=) rather than the part that includes the software license (e.g. There is a difference of opinion on the Internet as to when the license is required, but claims (Syburgh: I neither purchased from, nor have any affiliation with them): The spare "CP-79xx G=" parts come with the phone, corded handset, English language stickers, cardboard box, and miscellaneous warranty/safety papers.Outside the US it may be possible to buy an inexpensive SMARTnet contract for less than /year.Within the US the least expensive choice appears to be Bottom Line Telecom, for .95/yr .00 handling = .95 out the door.

They were quite helpful (following up on weekends and late at night) and even assisted in identifying that the phone I had received from an online vendor was a remarked spare.There are many Cisco Phone Headsets: anything from Plantronics with a Quick Disconnect (QD) connector should work, meaning any "H Series" headset (e.g H81 Tristar).A amplifier cable is also required (Plantronics Part: 26716-01), this is the same cable that connects a Plantronics headset to the M10/M12 amplifier and is sometimes listed as a "replacement amplifier cable". The following settings are particularly important and referenced elsewhere in this write up: Configure a local outbound SIP proxy (e.g. If you have one VOIP provider and they require you to register using a different SIP domain than their SIP proxy's FQDN, then you may be able to add the SIP proxy's FQDN here and the SIP domain in the proxy setting for the SIP line.You could use a dynamic DNS registration to ensure that this always matches your router's public IP address (e.g.myhome.dyndns.org), though configuring dynamic DNS is outside the scope of this write up.

They were quite helpful (following up on weekends and late at night) and even assisted in identifying that the phone I had received from an online vendor was a remarked spare.There are many Cisco Phone Headsets: anything from Plantronics with a Quick Disconnect (QD) connector should work, meaning any "H Series" headset (e.g H81 Tristar).A amplifier cable is also required (Plantronics Part: 26716-01), this is the same cable that connects a Plantronics headset to the M10/M12 amplifier and is sometimes listed as a "replacement amplifier cable". The following settings are particularly important and referenced elsewhere in this write up: Configure a local outbound SIP proxy (e.g. If you have one VOIP provider and they require you to register using a different SIP domain than their SIP proxy's FQDN, then you may be able to add the SIP proxy's FQDN here and the SIP domain in the proxy setting for the SIP line.You could use a dynamic DNS registration to ensure that this always matches your router's public IP address (e.g.myhome.dyndns.org), though configuring dynamic DNS is outside the scope of this write up.This subject would not be worthy of its own page for most phones, but there are enough caveats and workarounds for these UAs that others may benefit from shared experience.