There are 3rd-party options from vendors such as Plantronics that allow for you to use a wireless earpiece and/or bluetooth headset but, to my knowledge, there is no way to connect a cordless phone off a 7940. The wireless/bluetooth earpiece/headset options are the only real options you have here; however, the range is going to be limited. Next option would be to implement a wireless infrastructure and deploy a few wireless phones, as needed. If it's critical but limited in nature, you could also use an analog device (VG202, VG204, VG224) which you could connect a standard cordless set to but have the primary call control be VoIP via the analog gateway.
a) Use an FXS port to connect a traditional cordless phone to, or
b) Purchase a wireless IP phone, like a 7920, 7921, 7925 in leiu of your current 7940 solution.
The IP phone <-> handset cable is essentially a speaker cable from the phone to drive the microphone and speaker connection. It would be like trying to plug your cordless phone between an analog handset base and the earpiece--it wouldn't work since that's not a tip/ring telephony circuit.
A bluetooth headset could work, but you would need one that has a handset lifter, sine the headset jack does not provide call control to the phone itself and you wouldn't be able to remotely answer.
Introduction: The "external-out enable" command is available for
configuration under the "router ospf process" in case of the IOS-XR
operating system. This command basically enables advertisement of
intra-area routes on the device as external routes in th...
IntroductionIn this article we'll discuss how to troubleshoot packet
loss in the asr9000 and specifically understanding the NP drop counters,
what they mean and what you can do to mitigate them. This document will
be an ongoing effort to improve troublesh...