PATRNER II EXT. RING VOLTAGE?

[PHONMAN]

DOES ANYBODY KNOW WHAT THE RING VOLTAGE (AC & DC)IS ON A 206 STATION PORT ON A PARTNER II. I HAVE A CUSTOMER WITH A OFF PREMISIS EXT. LOCAL TELCO SUPPLIES A TIE LINE BETWEEN THE TWO SITES. I'VE GOT ABOUT 56 AC AND 75 DC @ RING. TELCO SAYS I SHOULD BE SUPPLING 85 TO 96 AC VOLTS OUT OF MY STATION PORT AND DON'T SEEM TO CARE WHAT DC VOLTAGE IS I GUESS IT'S ALL AC ONCE IT HITS THEIR TIE LINE. I CALLED ONE OF MY SUPLIERS AND THEY SAID NOWAY? ANY INFO WOULD BE VERY HELPFUL. THANKS Phonman@comcast.net
SMalcolm
CustomPrewire in K.C.

 

[392]

From page 23 of the PII 3.1 installation guide:

Ringing voltage: +5VDC,-140VDC peak-to-peak; trapezoidal wave shaping.

35- to 38- volt talk battery

Ringing frequency: 20 Hz

 

[franke]

Are the voltages you're citing taken at the near end or far end of the circuit? Did you install IROB's at both ends of the circuit? Are you trying to connect a single line set or a Partner set at the far end? Does a single line phone ring off the port at the near end but not the far end?

As 392 pointed out, ringing voltage is not AC but rather pulsating DC, for a typical LS line the range is ~92-104 VDC @ 20 Hz.

franke

 

[PHONMAN]

Thanks 392 I saw that in the manual. franke: Near end readings, no IROBS, yes a single line phone rings at near end not far end. This line has been in use for several years long before I came to know them and was installed by the original installation co.AT&T. Far end is a Vodavi 96EX CO port. The local telco tech that I met with was saying That I needed 85 to 96 AC volts coming out of my switch station port to trigger their ring generator.After talking to several other tech supt people obout this, we have concluded that I need a different local telco tech at the next vendor meet because the switch doesn't supply that kind of voltage numbers on AC and never has. Phonman@comcast.net
SMalcolm
CustomPrewire in K.C.

 

[392]

If you need to kick up the voltage due to the telco not working with you, you can use a Tellabs 7101 or 7102 card between the CO port and the OPX demarc. They're available for ~$35 from CO plugin companies, and are transparent other than kicking the ring voltage and current up. I use them for pushing 2500 extensions out 4500 ft and more. Great for large plants or campus environments with poor cabling facilities.

 

[franke]

Sounds like the Tellabs eqpt. might do the trick, though it would be interesting to know what 'changed' recently to cause the failure. Just out of curiosity, are you able to 'answer' the call at the far end or draw dialtone at the far end and call the near end without problems?

 

[392]

"are you able to 'answer' the call at the far end or draw dialtone at the far end and call the near end without problems?"

Absolutely. It just sorta supercharges the ring side, with variable gain on some models should you have low volume. I don't use the gain types, usually on a really poor circuit you just end up amplifying static and noise anyway.

 

[PHONMAN]

392 Yes, to both questions I get icm tone when I go off hook and can dial any other ext. no problems from the far end to the near end. If you call from the near end to the far end the near end hears ringing and if the far end picks up the ext the call is completed. I'm going to meet with the local telco again on monday and see if we can come up with a solution. I too would like to know what changed.Thanks for the Tellabs device tip, I'll let you know what happens. Phonman@comcast.net
SMalcolm
CustomPrewire in K.C.

 

[PHONMAN]

Well, local telco made some changes on their end and now the ext. rings and is working, they're not sure what fixed it.
Now we have a new problem......... the old stand alone Partner Mail has gone awry. The AA answers... no message(greeting)....sends calls to ext.10. Tried resetting admin pswd (from FAQs) won't take that either. No access to mailboxes either transfered or direct. Let me refine those statements, you can access the VM system icm 777, it just isn't responding to any passwords (system or mailbox)Resetting the unit has no effect.....I do have a hammer........any ideas? Phonman@comcast.net
SMalcolm
CustomPrewire in K.C.

 

[392]

Verify you haven't lost the PM extensions from hunt group 7 in the Partner. Sounds suspiciously like it's unintegrated....

 

[franke]

Try powering down the system, wait 30 seconds, then power the system back up. Watch the lights on the comm cards on the back of the VM, they should cycle for a while and then settle down to a solid green (this may take several minutes). Call each VM extension and watch it's corresponding light (should go from solid green to red). See if the problem exists on ALL ports or just on one card or just on one port. If it is on all ports, you could have a corrupted hard drive, otherwise it would be a bad comm card and you could temporarily solve the problem by removing those port(s) from hunt group 7.

If you can get into the admin mailbox (9997) verify that the date and time are correct.

 

[PHONMAN]

Thanks for the suggestions, checked all of above, bought an old refurbed unit (PM04,S/W 1.8)....works great...now just have to wade thru programing to set it up the way the customer wants it. Thank you for your time, knowledge and exp. Phonman@comcast.net
SMalcolm
CustomPrewire in K.C.